Misidentified Brackish Fish

[Pufferpunk]

I saw q giant school of monos in the Philippines.

 

[Piranha86]

I bet most wild caught 'brackish fish' are caught as juveniles in near-fresh water. There are no true brackish fish in my opinion, for example, you can keep mollies in pure fresh as long as it's hard and a Fahaka puffer needs gradually more salt as it grows. A lot of fish do swim inland to breed, as it is safer from predators.

 

[SubRosa]

I bet most wild caught 'brackish fish' are caught as juveniles in near-fresh water. There are no true brackish fish in my opinion, for example, you can keep mollies in pure fresh as long as it's hard and a Fahaka puffer needs gradually more salt as it grows. A lot of fish do swim inland to breed, as it is safer from predators.

How much can you afford to lose on this bet? If it's safer to swim into FW to have your babies why do American Eels which live in the "safer" FW environment swim into SW to have theirs?

 

[jpappy789]

anadromous: live in saltwater, breed in freshwater (salmon, smelt, etc.)

catadromous: live in freshwater, breed in saltwater (most eels)

It's not just one way...

 

[Pufferpunk]

a Fahaka puffer needs gradually more salt as it grows

HUH??? Fahakas are strictly a FW fish.