Freshwater Flounder ID

[AnthonyFish20]

I got these flounder and wanted to know the species they are? have them with a little marine salt but not fully brackish.

 

[TwoHedWlf]

Hmmm, I thought the Black flounder, Rhombosolea retiaria was the only freshwater flounder?

 

[kno4te]

Look like a fl hogchokers. So will need brackish water.

 

[AnthonyFish20]

These are 2 different species. i believe bottom one is hogchoker dont know about top pic.

 

[spotfin]

These are 2 different species. i believe bottom one is hogchoker dont know about top pic.

Agree, definitely two different fish. Do you know where they were collected?

 

[AnthonyFish20]

Agree, definitely two different fish. Do you know where they were collected?

No idea, but got them eating live black worms which is good.

 

[latapy10]

I used to have true freshwater sole cynoglossus sp.It lived with australian desert gobies in 80 litres tank.iT died because i had bad substrate in a tank....but i had it 8 months.

 

[AnthonyFish20]

I really want to know what kind of flounder this guy is Im confident one species I have is saltwater. The other species is thriving and goes after food right when it hits the water.

 

[spotfin]

A saltwater species most likely. Juveniles of some species live in brackish waters, moving to marine waters with age. Knowing collection point would help. This is a left eye flounder (fluke), so that can narrow your search some. Your pics are close enough so you can count fin rays- this will also help to id.
perhaps a summer flounder. Are you on/near the east coast of the US?

 

[spotfin]

It also looks like the lateral line is curved, another trait of summer flounders.