1

We have a 60 litre tank with around 6 adult fish, and 6-8 juveniles. They are mostly happy, rarely swim at the surface, and spend much of their time foraging. On the rare (maybe monthly) occasions I put a block of frozen bloodworms into the tank, they eat it very quickly and appear to enjoy the change from bug bites or algae wafers (for the 2 bristlenose catfish). However, after around 30 minutes the fish appear visibly bloated and will swim at the surface for some time. Within a few hours, they will revert to their normal shape.

What is it about bloodworm which causes them to become visibly enlarged?

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.