Brackish fish-to full Saltwater?

does anyone know or have experience with taking a brackish water fish and integrating it into a saltwater tank. I was reading somewhere that this is why it is possible to keep mollys in a saltwater tank. Somewhere i was reading that if done slowly and gradually, and brackish water fish can live in full saltwater...

now the reason i ask is because someone in my fish club had a bumble bee goby in their tank, which i thought was strictly fresh or brackish water...the person thought the fish disapered, and it was assumed dead. Today they found the fish swimming around happily.

Im just looking for some feedback from people...Could if just be that the bumble bee is that hardy...or has it fully adapted from being able to stay in brackish water to the salt?

 

bump....wow no one?

 

Wow. missed this one

12 years ago, I converted FW black mollies to salt water (Honestly)
I converted 1 male and 2 females - by gradually increasing salinity in the FW tank they where in by doing 10% water changes every other day using salt water (taking out fresh and adding normal salt water 1.024 ish at the time I recall)

when the SG in the molly tank was the same as in my Salt water tank - I transfered the fish

the females gave birth to young in the salt water (numbers I recall where lower than previous broods in FW?)

Black mollies are really good algae eaters and that is why I did this


Steve

 

thanks for the feedback...someone in my local club said something almost identical to what you did...im thinking about purchasing a couple bumble bee gobies for my tank...i never knew you could keep them in saltwater...

 

i would say it depends upon the fish, guppies and mollies and actually tolerate a salinity higher then most true saltwater fish. some guppies live in saltwater with specific gravity of 1.040 (thats 50% higher then sea water), also note guppies and mollies are suppose to do better in saltwater then fresh.

 

i had a couple of mollies in my tank for about 3 hours. they only bit the dust because my hippo tang had an issue with them being there. they were doing fine until the tang went after them. I took my time acclimating them, maybe 5 or 6 days, waaay longer than needed.