So let me explain what’s going on here. You’re looking at two male Ancistrus fish, South American vegan (of course!). Part of a shoal of about 20, all of whom have been with me for thirty years. The things they’re clustered round are Ancistrus fish eggs, and they are guarding, not eating, them. The female lays them then leaves it to the male (just one, usually!) to look after them as they develop, involving a lot of fin fanning to keep the water flowing around them and thus prevent rot. Hopefully, these two males are good friends since the baby fish, when they emerge, will have two fathers!
