Why is my Tetra Glofish so huge compared to the others.

[sebastianloverbb]

My purple glofish is like unnaturally huge compared to the other tankmates. Is she eating too much? I don’t think she’s pregnant…

 

[BrianK]

That looks like a black skirt tetra. That one is probably a female. They are a bit bigger and wider.

 

[GaryE]

They are a fish with many names, black skirt, white skirt, black widow, widow tetra - and glofish tetra if they have had jellyfish genes spliced into them. Gymnocorymbus ternetzi is the scientific species name. And if you check them out, they grow rather large for a tetra. That one just has a head start.

 

[Stan510]

I think it has an internal parasite or possible swim bladder issue. If it swims fine and upright than I would bet on parasite. I don't know what you do to treat that..usually its fatal that advanced.

 

[Back in the fold]

What else do you expect of an X-Men fish ?