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Website build d14c703 • updated Oct 10, 2026, 3:48 PM EDT

FPB / SPECIES EVIDENCE

Careful evidence.
Better fishkeeping.

Read what keepers observed, what authors recommend, and where the evidence leaves questions open.

Bounded research coverage
Catalog subjects: October 2, 2026
See current availability

Keeper reports are attributed experiences. They do not establish species identity, independent replication, biological causes or a guaranteed breeding method. Trade labels and missing measurements remain unresolved.

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Located evidence

597 matching reports

Located reports and recommendations with attribution.

Care reports at a glance

pH: {"min":6.8,"max":7} Read citation and limits

temperature: 30 — Original says degrees; scale unstated Read citation and limits

feed: Frozen shrimp, mussel, spirulina-containing tablets Read citation and limits

Disagreements and qualifications

L333 water chemistry

Accounts vary: pH 6.8–7.0, 7.5 and 6.5; one report had KH 6/GH 15 in source degree notation.

Do not require uniformly soft acidic water based on anecdotal pooling

L333 triggers

Water-change, conductivity and darkness associations are uncontrolled; S04 reports softening did not improve spawning.

Describe as keeper observations, not reliable triggers

L333 hatch timing

Cocker explicitly did not time hatching. Nancy supplies generalized 5–7 days without dated measured cohort.

Not independently corroborated measured hatch range

l333 / carepersonal-anecdote

pH: {"min":6.8,"max":7}

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Cocker (pseudonym) — Zuchtbericht - L 333 - Hypancistrus sp.

www.l-welse.com · Ansatz
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

pH-0
{"min":6.8,"max":7} · unit unknown (uncertain)
pH-unit-0
not reported (missing)

Coverage and gaps

This is a growing index of selected public sources. Shared authors, copied pages and overlapping cohorts do not count as independent corroboration. Date, unit, taxon, denominator and endpoint gaps remain visible in the reports.

Human-origin judgments rely on attribution and source evidence; no reliable AI detector is claimed. This library republishes original limited summaries and attribution, with no publisher full text or media.

Suggest a source or report a correction
survival_denominator
not reported (missing)
l333 / carepersonal-anecdote

temperature: 30 — Original says degrees; scale unstated

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Cocker (pseudonym) — Zuchtbericht - L 333 - Hypancistrus sp.

www.l-welse.com · Ansatz
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

survival_denominator
not reported (missing)
temperature-0
30 · unit unknown (uncertain)
temperature-unit-0
not reported (missing)
l333 / carepersonal-anecdote

feed: Frozen shrimp, mussel, spirulina-containing tablets

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Cocker (pseudonym) — Zuchtbericht - L 333 - Hypancistrus sp.

www.l-welse.com · Vorgehen
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

feed-0
"Frozen shrimp, mussel, spirulina-containing tablets" · unit unknown (uncertain)
feed-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / breedingpersonal-anecdote

conditioning: Water level reduced 60%; conductivity 40–50 raised to 800 for 21 days — Conductivity unit unstated

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Cocker (pseudonym) — Zuchtbericht - L 333 - Hypancistrus sp.

www.l-welse.com · Vorgehen
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

conditioning-0
"Water level reduced 60%; conductivity 40–50 raised to 800 for 21 days" · unit unknown (uncertain)
conditioning-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / breedingpersonal-anecdote

water_change: Daily 20 L cold plus 30 L tempered; cold water 18 degrees — Temperature scale unstated

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Cocker (pseudonym) — Zuchtbericht - L 333 - Hypancistrus sp.

www.l-welse.com · Vorgehen
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

survival_denominator
not reported (missing)
water_change-0
"Daily 20 L cold plus 30 L tempered; cold water 18 degrees" · unit unknown (uncertain)
water_change-unit-0
not reported (missing)
l333 / breedingpersonal-anecdote

spawning_association: First mating after conductivity fell below 100 — Not causal proof; unit unstated

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Cocker (pseudonym) — Zuchtbericht - L 333 - Hypancistrus sp.

www.l-welse.com · Ablaichen/Brutpflege
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

spawning_association-0
"First mating after conductivity fell below 100" · unit unknown (uncertain)
spawning_association-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / breedingreported-measurement

offspring: 36 [juveniles_from_two_clutches]

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Cocker (pseudonym) — Zuchtbericht - L 333 - Hypancistrus sp.

www.l-welse.com · Ablaichen/Brutpflege
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

offspring-0
36 juveniles_from_two_clutches (reported)
survival_denominator
not reported (missing)
l333 / breedingpersonal-anecdote

growout: Left with parents; later 6–9 cm

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Cocker (pseudonym) — Zuchtbericht - L 333 - Hypancistrus sp.

www.l-welse.com · Schlupf und Aufzucht
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

growout-0
"Left with parents; later 6–9 cm" · unit unknown (uncertain)
growout-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / breedingreported-measurement

group: {"male":3,"female":2,"acquired_size":[9,12],"later_size":[12,15]} [cm_unspecified_length_basis]

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Gruppe
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

group-0
{"male":3,"female":2,"acquired_size":[9,12],"later_size":[12,15]} cm_unspecified_length_basis (reported)
survival_denominator
not reported (missing)
l333 / carereported-measurement

tank: 112 [L] — Species tank from mid-2009

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Haltung
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

survival_denominator
not reported (missing)
tank-0
112 L (reported)
l333 / carepersonal-anecdote

caves: Numerous clay tubes; no dimensions

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Haltung
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

caves-0
"Numerous clay tubes; no dimensions" · unit unknown (uncertain)
caves-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / carereported-measurement

KH: 6 [source_degrees_KH]

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Haltung
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

KH-0
6 source_degrees_KH (reported)
survival_denominator
not reported (missing)
l333 / carereported-measurement

GH: 15 [source_degrees_GH]

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Haltung
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

GH-0
15 source_degrees_GH (reported)
survival_denominator
not reported (missing)
l333 / carereported-measurement

pH: 7.5 [dimensionless]

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Haltung
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

pH-0
7.5 dimensionless (reported)
survival_denominator
not reported (missing)
l333 / carereported-measurement

temperature: 29 [degC]

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Haltung
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

survival_denominator
not reported (missing)
temperature-0
29 degC (reported)
l333 / carepersonal-anecdote

feed: Varied frozen foods; reluctant dry-food acceptance

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Gruppe
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

feed-0
"Varied frozen foods; reluctant dry-food acceptance" · unit unknown (uncertain)
feed-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / breedingpersonal-anecdote

spawning_association: One female about every nine weeks after two weeks of daily 20% changes

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Nachzucht
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

spawning_association-0
"One female about every nine weeks after two weeks of daily 20% changes" · unit unknown (uncertain)
spawning_association-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / carereported-measurement

change_temperature_low: 24 [degC]

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Nachzucht
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

change_temperature_low-0
24 degC (reported)
survival_denominator
not reported (missing)
l333 / breedingpersonal-anecdote

failure: Early clutches eaten

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Nachzucht
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — failure

Event date: not reported

failure-0
"Early clutches eaten" · unit unknown (uncertain)
failure-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / breedingpersonal-anecdote

darkness_event: Two clutches after three dark days; expelled eggs developed fungus except two

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Nachzucht, spring 2010
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — failure

Event date: not reported

darkness_event-0
"Two clutches after three dark days; expelled eggs developed fungus except two" · unit unknown (uncertain)
darkness_event-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / breedingreported-measurement

survivors: 2 [juveniles_about_3_cm]

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Nachzucht
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

survival_denominator
not reported (missing)
survivors-0
2 juveniles_about_3_cm (reported)
l333 / breedingpersonal-anecdote

soft_water_trial: Did not improve spawning frequency

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Ansgar (Blues-Ank) — Haltungs- und Zuchtbericht Ansgar (Blues-Ank)

www.l-welse.com · Die Nachzucht
· published date unknown · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

soft_water_trial-0
"Did not improve spawning frequency" · unit unknown (uncertain)
soft_water_trial-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / breedingpersonal-anecdote

group: {"female":6,"male":4,"adult":true}

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Nancy (surname not stated) — Zuchtbericht Königstiger Harnischwels - Hypancistrus spec. L333

aquaristik-lexikon.de · Das Zuchtbecken
· published 2025-03-19 · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

group-0
{"female":6,"male":4,"adult":true} · unit unknown (uncertain)
group-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / carereported-measurement

tank_dimensions: [120,60,30] [cm]

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Nancy (surname not stated) — Zuchtbericht Königstiger Harnischwels - Hypancistrus spec. L333

aquaristik-lexikon.de · Das Zuchtbecken
· published 2025-03-19 · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

survival_denominator
not reported (missing)
tank_dimensions-0
[120,60,30] cm (reported)
l333 / carepersonal-anecdote

GH: <6 — Hardness unit unstated

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Nancy (surname not stated) — Zuchtbericht Königstiger Harnischwels - Hypancistrus spec. L333

aquaristik-lexikon.de · Das Zuchtbecken
· published 2025-03-19 · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

GH-0
"<6" · unit unknown (uncertain)
GH-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / carepersonal-anecdote

KH: <1 — Hardness unit unstated

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Nancy (surname not stated) — Zuchtbericht Königstiger Harnischwels - Hypancistrus spec. L333

aquaristik-lexikon.de · Das Zuchtbecken
· published 2025-03-19 · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

KH-0
"<1" · unit unknown (uncertain)
KH-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / carereported-measurement

pH: 6.5 [dimensionless]

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Nancy (surname not stated) — Zuchtbericht Königstiger Harnischwels - Hypancistrus spec. L333

aquaristik-lexikon.de · Das Zuchtbecken
· published 2025-03-19 · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

pH-0
6.5 dimensionless (reported)
survival_denominator
not reported (missing)
l333 / carepersonal-anecdote

temperature: 27–28 — Source degree mark without scale

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Nancy (surname not stated) — Zuchtbericht Königstiger Harnischwels - Hypancistrus spec. L333

aquaristik-lexikon.de · Das Zuchtbecken
· published 2025-03-19 · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

survival_denominator
not reported (missing)
temperature-0
"27–28" · unit unknown (uncertain)
temperature-unit-0
not reported (missing)
l333 / carepersonal-anecdote

feed: Frozen Artemia, Mysis, mussel, fish; Diskusfood Artemia granules

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Nancy (surname not stated) — Zuchtbericht Königstiger Harnischwels - Hypancistrus spec. L333

aquaristik-lexikon.de · Das Zuchtbecken
· published 2025-03-19 · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

feed-0
"Frozen Artemia, Mysis, mussel, fish; Diskusfood Artemia granules" · unit unknown (uncertain)
feed-unit-0
not reported (missing)
survival_denominator
not reported (missing)
l333 / breedingexpert-recommendation

conditioning: About seven days feeding; three water changes over three days

Reported evidence with source and stock-identity limits; this is not a verified breeding protocol or success probability.

Nancy (surname not stated) — Zuchtbericht Königstiger Harnischwels - Hypancistrus spec. L333

aquaristik-lexikon.de · Das Zuchtbecken
· published 2025-03-19 · accessed 2026-10-02
Original short summary with attribution. Publisher copyright retained; no full text or media republished.

Detailed reported record — unknown

Event date: not reported

conditioning-0
"About seven days feeding; three water changes over three days" · unit unknown (uncertain)
conditioning-unit-0
not reported (missing)
survival_denominator
not reported (missing)
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