What are the white things swimming in my fish tank?

Answer by  navywriter (790)

It could be little shrimp-like creatures called copepods or amphipods. They can look like tiny white bugs in their "baby" stages. These can show up in salt water aquariums.

Answer by  LovesPets (36)

First find out if they are actually swimming or just floating. If they're swimming it might be baby fish if floating you may want to clean the tank.

Answer by  Shreyansh (236)

These white things can be possibly the larvae some of insects such as mosquitoes, which reproduce in the water. Fishes sometimes eat them too. These are not harmful at the initial level but may become a nuisance at the secondary/later levels.

Answer by  Diddum (348)

It is difficult to answer without more details about these white "things". The most probably thing is that they are larvae of insects, like mosquitoes, which reproduce in water. Probably not harmful to fishes (sometimes they are eaten by fishes) but they may become a nuisance when adult.