Red Finned Shark Swollen

[emsfactory]

Hi all, my red finned shark has develoved a rather full figure almost over night. Starting at the pec fins and going backwards. Is this anything to worry about?

Thanks.

 

[WILDER]

How many gallons is the tank.
How many fish and which type.
Water stats in ammonia, nitrite, nitrate, and ph.
What do you feed the fish?
Cook some frozen peas for a few minutes, let cool down, pop out of shell, mush between fingers into small bits and add to the tank.