How to Reduce Cannibalism Among Catfish

I would pay a little more for graded, uniform fingerlings from a hatchery I trusted.

I would build a simple grading routine into my calendar from the first week.

I would feed small fish more often than I thought was necessary.

I would add hides to my tanks before stocking.

I would pull out the shooters and keep them separate.

And I would count my fish at every grading, not only at harvest.

Frequently asked questions

Why do my catfish eat each other?
Catfish are natural predators, and they eat smaller fish when size differences are large, feed is short, or the fish are crowded and stressed. Grading, good feeding, and sensible stocking reduce it.

How often should I grade catfish?
In the early fingerling stage, often every week or two, and less often as the fish grow. The right schedule depends on how quickly the sizes spread, so sample regularly and adjust.

Does cannibalism happen in adult catfish?
It is most severe in fry and fingerlings, but larger fish can still eat smaller ones if the size gap is big enough. Grading and good feeding help at every stage.

Can I stop cannibalism by feeding more?
Feeding enough helps a lot, since hungry fish turn predator. But feeding alone will not fix a pond with big size differences, so grade as well.

Do hiding places really help?
Yes. Cover gives small fish a place to escape and reduces stress and encounters. Use clean, safe materials and keep them easy to clean.

The advice worth bookmarking

Catfish do not become cannibals by accident, they become cannibals when you let the sizes drift apart and the feed run short, so grade early, feed well, and never leave a big fish alone with small ones.