3 replies to this topic

[Leo1234]

What fish are commonly thought of as "marine only" that actually can be found in brackish and freshwater?
This can also be used as a helpful list of brackish fish for aquariums for  reference
For example, some snapper species (1 from north america) can apparently be found in fresh and brackish even though they are usually considered saltwater fish. 
Another example is Gymnothorax polyuranodon (not native). People usually assume these need brackish to saltwater, but they are usually found inland.

What species are native that are like this? Feel free to add max size and put * next to the ones that can be in aquariums.

[Moontanman]

I've kept spots, crokers, and drum, hogchokers of course, I'm not sure how big they would get in freshwater but mine were several inches long when the tank leaked out one night and killed them... 

[gerald]

Some marine fish naturally move into freshwater temporarily (days, weeks, months), and that may be the main areas where they're caught, but they may not be able to survive and grow long term without periodic "vacations" back to brackish or salt habitats to replenish important minerals.

[littlen]

A bull shark might be a good choice.