marine fishes to fresh water?

[kenzu0911]

hi sir,
Would it be possible if mabubuhay ang marine water fish like percula sa freshwater?
There's somethin on my mind, if not gradual ung pagbaba ng salinity.
Would it be possible, sir?
or if they will lay eggs, then we will transfer those eggs into a good condition freshwater tank,
will they hatch still in the future? and if they hatch, will they survive, sir?
sorry for my noob question.. Thanks.

[seth]

Hi bro,

Chuck has been inactive for quite sometime. But to address your question, the answer is a straightforward NO.

Marine reef fishes have evolved over hundreds of thousands of years to be able to excrete salt from their bodies.

Unless what you are trying to keep is anadromous - like salmons, you just can't put a reef fish into FW.

Naalala ko lang kasi sa carti nauso yan, converted daw into FW. That's one honest-to-goodness bullcrap.

Putting reef fish into hyposalinity (1.009) would work, but still unnatural. Any lower than that will cause osmotic stress and even death to the fish. Even if done over a course of year.

hth

[kenzu0911]

thanks!
meron pla nauso sa carti ng ganon dati? converter? hehe..
how bout my next question, how bout the eggs to be hatch in freshwater?

[seth]

Yup, daming nauto nun. Plain cruel and just senseless. Kawawa lang din yung fishes.

Same answer applies, bro. You can't hatch them in FW. They will just die even with super slow acclimation. You just cannot beat plain evolution, unless you devise a way to dilate time.

[boom_smashers]

May nakita ako as youtube. FW and SW fish magkasama sa isang tank. Pero I think its a special type of water. Try to search for Gex magical water in YouTube.

[trowa]

It has to do with osmosis. Saltwater fish live in saltwater which is denser than their tissues. Salt fish body cells are constantly losing water to their envrionment so they are always drinking water to get fluid. Their kidneys work really hard to get the salt out. Freshwater fish have cells less dense than the water around them so they being flooded with fluid. Freshwater fish don't drink any water but are constantly urinating to get the excess water out.

Because of this big difference in how their bodies are set up most fish cannot move between the two. However, their ARE fish who are able to such as scats, monos, sailfin mollies, some puffers and rays, and bull sharks.

[obet_carlos]

[ryanuy]

Salt water fishes belong in salt water. They cant be converted. Dont even bother trying because you will just waste the fishes.

That gex magical water was a big issue in singapore before and its one gigantic scam. Its not magic. Its salt. They increase the salinity of FW to 1.008 or 9 which is still livable for fresh water fishes. Its basically brackish water only and unless your adding brackish water fishes, they will die because the fish dont belong in that environment. Its quite literally one of the dumbest things EVER invented.

[thurrmac]

bull sharks and salmon lang ang kilala kong migrator from salt to fresh just to spawn
and then back to salt again... if theyre still alive... other than that wala na

and i know mollies can be slowly acclimated to salt see garf.org...

i had one brackish antennarius fish before in fresh water... katangahan ko lang
pinakain ko ng kataba ayun patay sa empatso... eto sya

http://www.youtube.com/watch?v=U1UOwuFjg_8

[seth]

[thurrmac]

[seth]

@rocky naku bro, baka nga. Pero yung scats siga.

[kenzu0911]

To all of you guys, i thank you all..
Marami ako natutunan..

I have another question.
Another idea comes into my mind.. (hehe. masyado malikot isip ko e.)
A saltwater fish, mabubuhay sa .08 -.09 salinity.. is a freshwater fish can do too?
Will a saltwater fish, can survive in hyposalinity and live in a long period of time?
so as a freshwater fish also?
if so, i'll try putting a swordtail molly in a hypo tank, but of corz, i wil acclimate the swordtail by adjusting the salinity til it reaches .08.. just an experiment, what do you think gurus?

[seth]

Yes, saltwater fishes may live under hyposaline environments but until when - that I cannot answer since I do not have any knowledge or experience.

As mentioned in several posts earlier, some FW fishes can live in brackish (hyposaline) environments like scats, mono angels and sailfin mollies. Sailfin mollies can even tolerate full-strength salinities.

I am not sure if you will be able to keep common swordtails in a brackish environment as they are commonly bred in tanks with neutral ph. Most of the time they are bred in relatively soft water.

Anyway, here's a link.
http://animal-world.com/encyclo/fresh/l ... dtails.php

Maybe you could try sailfin mollies instead. For sure they will be able to tolerate saline environments.

Just remember that experiments should be done under a solid fact or basis with a specific goal in mind, not out of whim. So if your only goal is something out of a curio shop, I would discourage you from continuing. Anyways, good luck and keep us posted.

[cee]