Who Gives A Fish Forums

Just added three new Corydoras to my 20 gallon planted tank, but they're not touching the sinking wafers or frozen bloodworms. Water params are good, 0 ammonia, 0 nitrite, 10 nitrate, temp at 76F. Tankmates are six neon tetras and a betta. Any ideas why they're not eating?

Corydoras can be shy when first introduced. Try feeding after lights out or using live foods like blackworms to entice them. Also, check if the betta is intimidating them during feeding.

Yep, bettas can be jerks sometimes. Mine used to flare at the corys until I moved him to another tank. Maybe try a feeding dish so the food doesn't get lost in the substrate.

Dude, my corys were the same way when I first got 'em. Took like three days before they chilled out and started eating. Maybe just give 'em time?

carton wrote: ↑Sun Jun 15, 2025 10:02 pm Dude, my corys were the same way when I first got 'em. Took like three days before they chilled out and started eating. Maybe just give 'em time?

Agreed. Stress from transport can mess with their appetite. Keep the lights low and avoid sudden movements near the tank.

Corydoras are more likely to eat in a group. If you only have three, consider adding a few more to reduce stress. Also, ensure the substrate isn't too sharp for their barbels.

Mine refused food until I switched to Repashy Soilent Green. They go nuts for it now. Maybe try a gel food if wafers aren't working.

Check the expiration date on your food. Old wafers lose their smell, and corys rely heavily on scent to find food.

If the betta's the issue, try distracting him with floating pellets at one end while you feed the corys at the other. Worked for my tank.

Thanks for the advice, everyone. I'll try feeding at night and maybe grab some Repashy. Appreciate the help!