I have two silver sharks in my aquarium. Today, I noticed that one seems to have a couple of bumps on its underbelly (see picture) also is hiding at the back of the tank, but usually swims around in the open area.
How can I confirm if this is pregnancy/carrying eggs (sorry I'm not sure of the biology on this), or something wrong with the fish? Also, if pregnant, what steps should I take next?
Shark1 not pregnant:
Shark2 possibly pregnant:
Shark2 possibly pregnant: