Crowd thread digest

What the crowd said: hardest freshwater fish to breed

📊 Thread digest 🐠 Fish 📅 April 2026
Original question

What’s the top 5 freshwater fish that are hardest to breed?

Thread quality (estimated)

0 to 100. Qualitative, not a verdict on who was “right.”

Engagement 77

Specialist fish Twitter plus breeding-war stories, a few list flexes, and skeptics shredding the premise of a tidy top five.

Contention 62

Hot splits on whether whole families are “hard” or only certain species; corydoras-and-plecos range from routine to mythical.

Agreement 60

Huge swaths of the hobby have never spawned in glass; when someone cracks a rare breeder event, folklore follows.

How we scored it: Qualitative estimates (engagement, disagreement, overlap), not a formula on raw reply counts.

Answers rolled into five bands

Percentages are approximate share of distinct takes in the thread.

“There is no top five:” thousands of unknowns
Hundreds uncaptive; wild Corydoras versus farm staples; Mormyridae, spiny eels, amphidromous migrants; Google cannot eat failures for you
27%
27%
Loaches and botias: folklore, lone successes, hormonal fog
Clown loach breeder legends, rare ropefish reports, stray kuhli fry, conflicting takes on hillstream Sewellia supposedly easy versus “any loach” blanket doom
25%
25%
Big predator cichlids and charismatic freaks
Name-drops like discus surrogate parenting marathon water politics, huge African cichlids, pike-type skittish pairs, puffers, rays, datnoids; someone crowns one species as the hardest spawn on Earth
21%
21%
Catfish long tail: pleco bell curve and zero-success families
Bristlenose easy mode versus zebra pleco stress; apocryphal “never bred” lancer-type groups; wild versus line-bred Corydoras contrasted in the same breath
15%
15%
Detours: otos, hatchets, shrimp, joke answers
Deformity-free otocinclus wish lists; amano salinity tangents; a few threads veer into low-brow humor or pun fish names before correcting to real species
12%
12%

Where it got argumentative

  • Top-five framing versus a hobby where most species have no reliable captive recipe.
  • “Corydoras and plecos are easy” slammed against rows of L-numbers and wild forms that almost nobody reproduces at home.
  • Hillstream loaches hardest versus Sewellia allegedly breeding in basic community setups when flow and stone feel right.
  • Discus impossible versus discus routine in the right house, especially when comparing eras and water sources.
Practical takeaway

Note: Crowd fishrooms are not peer-reviewed aquaculture. Verify claims against current husbandry literature and experienced breeders in your region. This page compresses one thread, not a breeding licensing course.

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