Reptile & Amphibian Forums

I have a 55 gallon aquarium and I recently bought two 2" Green Spotted Puffers. They are currently beibg kept in freshwater conditions with a pH of 7.5 since they are juveniles. I am going to slowly adjust the tank to low brackish conditions over a period of a few days. The only problem is with my other fish. The other fish are as follows:
1 Striped peacock eel
1 Rope fish
1 farlowella catfish
I have read that most fish can survive in low brackish conditions from 1.006 and below. will 1.006 salinity be OK for all the fish in the Aquarium? Will my puffers be ok at this salinity? Any help will be appreciated.
(P.S. will a snowflake moray be able to live in a salinity of 1.006?)

You should be fine. You've got the right idea by making the gradual change for all the fish at once. I'd go with about 20% salt water in the long run (i.e. - they sell bags of marine salt that are pre-measured for 5 gallons of salt water, so rougly 2 and a half bags dissolved into your water over a period of 1-2 weeks should be gentle enough on all fish). As for your other fish: ropefish, catfish, and eels (especially the morray) should do just fine in brackish water (just don't let the salinity get too high). If you read up on them, you'll probably find out that they'll prosper, but may not mate in brackish conditions if they're true fresh water fish. But it doesn't sound like you're looking to breed anything anyway. I've got an eclipse (sunrise) catfish, a jack dempsey, and a freshwater morray eel (but requires brackish water....don't ask me...???) in a brackish tank and they're all doing quite well. As aggressive as the Jack (properly named "Jack" is rumored to be, he's made quite good friends with the eel. The cat just keeps to himself and sleeps in an ornamental tree all day (I tend to have the strangest fish).

Good luck!

Thanks. this info has really helped. the only problem is that the catfish and the puffers died. I moved my ropefish to my grandmothers tank because of a shortage of fish there. this leaves me with a empty 55 gallon tank(because i never got a chance to buy the moray) i recently purchased a dragonfish from my local pet store and read that this fish is also brackish. I would like to put it into a brackish tank with a snowflake eel but I have no Idea what the conditions should be like for the Dragonfish.
Any help will be deeply appreciated.

I've had my Dragonfish for about 9 months now. He is huge and healthy. In fresh water though. Well up until recently I have been adding some Aquarium Salt. But before this NO SALT, and he has been fine and healthy. They never even mentioned Brakish for him.. hmmmmm.... But the Salt is good for the mollies so I added it. Doesn't hurt the Dragon or any of my other fish.
I am just TRYING to find a good place to BUY BRAKISH/FRESH WATER EELS!!! Online. Having no luck