freshwater to saltwater? - Aquarium Advice

Lady Elizabeth · 11-17-2004, 09:08 AM

i think a friend told me this but i'm not sure if it's true... please dont laugh at me but are there really fishes that you can adjust and adapt from freshwater to saltwater?

workfortheman · 11-17-2004, 09:31 AM

from my experience/reading (which isn't much) There are no species that can go from strictly freshwater to strictly seawater. BUT....
there are many species who cross the borders between fresh and saltwater: For instance, Some Pufferfish (tetraodon sp.) do okay in pure freshwater when young but require heavy salinity as they mature. Some Brackish water fish (eg. gobies) SURVIVE in freshwater, but will not be happy. Also, there are some species that start in somewhat brackish water but need saltwater as they grow older.

I would check out some links on Brackish tanks/species if I were you, here's a couple links for ya:

http://badmanstropicalfish.com/brackish/brackish.html
http://www.aquariacentral.com/faqs/brackish/

TankGirl · 11-17-2004, 10:26 AM

Mollies can go either way. Often you will see mollies cycling a full marine tank. There are lots of fish that start out as [acronym:9feaa55b2e="Freshwater"]FW[/acronym:9feaa55b2e] and later need brackish to full salt, as workfortheman mentioned, but mollies are the ones most commonly kept as [acronym:9feaa55b2e="Freshwater"]FW[/acronym:9feaa55b2e] that can be acclimated to [acronym:9feaa55b2e="Saltwater"]SW[/acronym:9feaa55b2e] (I prefer to keep them brackish for optimal lifespan and health).

MACATUA · 11-17-2004, 10:27 AM

I was wondering if anyone kept mollies in a marine setup? I bet they look kinda funny in a marine tank

TankGirl · 11-17-2004, 01:22 PM

My father in law used to, and if you are used to seeing them in [acronym:685c61d3cc="Freshwater"]FW[/acronym:685c61d3cc], it definitely gives you a double-take! They really are remarkable fish.

pkremer · 11-17-2004, 03:06 PM

Salmon do it as part of their natural life cycle...or were you asking for your aquarium? hehe!

Paul

cdawson · 11-18-2004, 01:55 AM

Quote:

Originally Posted by MACATUA

I was wondering if anyone kept mollies in a marine setup? I bet they look kinda funny in a marine tank

I used too until my Green spotted puffer (the reason it was going [acronym:44a7d4cefd="Saltwater"]SW[/acronym:44a7d4cefd]) ate them!

Pufferpunk · 11-18-2004, 01:55 AM

There are several puffers that are born in [acronym:dab1791366="Freshwater"]FW[/acronym:dab1791366], live their juvenile years in BW & their adulthood in [acronym:dab1791366="Saltwater"]SW[/acronym:dab1791366], only to go back to [acronym:dab1791366="Freshwater"]FW[/acronym:dab1791366] to reproduce.

cdawson · 11-18-2004, 01:58 AM

Quote:

Originally Posted by MACATUA

I was wondering if anyone kept mollies in a marine setup? I bet they look kinda funny in a marine tank

I used too until my Green spotted puffer (the reason it was going [acronym:8ee3dd054f="Saltwater"]SW[/acronym:8ee3dd054f]) ate them!

Lady Elizabeth · 11-18-2004, 03:00 AM

thanks for the info guys... maybe if any of you were able to find other species of fish that can adjust from [acronym:71a0b2b59f="Freshwater"]FW[/acronym:71a0b2b59f] to [acronym:71a0b2b59f="Saltwater"]SW[/acronym:71a0b2b59f] you can place them here so that everyone can learn about them

that would be cool

11-17-2004, 09:08 AM	#1 (permalink)
Lady Elizabeth Aquarium Advice Regular Join Date: Sep 2004 Location: philippines Posts: 88 Images: 13	freshwater to saltwater? i think a friend told me this but i'm not sure if it's true... please dont laugh at me but are there really fishes that you can adjust and adapt from freshwater to saltwater?

11-17-2004, 09:31 AM	#2 (permalink)
workfortheman Aquarium Advice Freak Join Date: Oct 2004 Location: Michigan Posts: 484 Images: 1	from my experience/reading (which isn't much) There are no species that can go from strictly freshwater to strictly seawater. BUT.... there are many species who cross the borders between fresh and saltwater: For instance, Some Pufferfish (tetraodon sp.) do okay in pure freshwater when young but require heavy salinity as they mature. Some Brackish water fish (eg. gobies) SURVIVE in freshwater, but will not be happy. Also, there are some species that start in somewhat brackish water but need saltwater as they grow older. I would check out some links on Brackish tanks/species if I were you, here's a couple links for ya: http://badmanstropicalfish.com/brackish/brackish.html http://www.aquariacentral.com/faqs/brackish/ __________________ Ernie www.ErnestJohn.com

11-17-2004, 10:26 AM	#3 (permalink)
TankGirl Aquarium Advice Addict Moderator Emeritus Join Date: May 2003 Location: Richmond VA Posts: 8,279 Images: 16	Mollies can go either way. Often you will see mollies cycling a full marine tank. There are lots of fish that start out as [acronym:9feaa55b2e="Freshwater"]FW[/acronym:9feaa55b2e] and later need brackish to full salt, as workfortheman mentioned, but mollies are the ones most commonly kept as [acronym:9feaa55b2e="Freshwater"]FW[/acronym:9feaa55b2e] that can be acclimated to [acronym:9feaa55b2e="Saltwater"]SW[/acronym:9feaa55b2e] (I prefer to keep them brackish for optimal lifespan and health). __________________ TG Central Virginians click here and join the Regional Forum! View My Gallery Here

11-17-2004, 10:27 AM	#4 (permalink)
MACATUA Aquarium Advice FINatic Join Date: Jul 2003 Location: WOODSTOCK, GA Posts: 869 Images: 5	I was wondering if anyone kept mollies in a marine setup? I bet they look kinda funny in a marine tank __________________ Woo Hoo, PAYDAY! Time to pay the [acronym="Local Fish Store"]LFS[/acronym] rent (even before I pay mine ) Join the Alabama Regional Forum!

11-17-2004, 01:22 PM	#5 (permalink)
TankGirl Aquarium Advice Addict Moderator Emeritus Join Date: May 2003 Location: Richmond VA Posts: 8,279 Images: 16	My father in law used to, and if you are used to seeing them in [acronym:685c61d3cc="Freshwater"]FW[/acronym:685c61d3cc], it definitely gives you a double-take! They really are remarkable fish. __________________ TG Central Virginians click here and join the Regional Forum! View My Gallery Here

11-17-2004, 03:06 PM	#6 (permalink)
pkremer Aquarium Advice Freak Join Date: Apr 2004 Location: Fargo, ND Posts: 478 Images: 3	Salmon do it as part of their natural life cycle...or were you asking for your aquarium? hehe! Paul __________________ 38 Gallon (Freshwater): 1 Green Swordtail, 3 Yo-Yo Loaches, 1 Clown Pleco, 1 Blue Gourami, 4 Otocinclus, 7 Cherry Barbs. 46 Gallon (Saltwater): 60 pounds Lalo Live Rock, 60 pounds aragonite sand, 1 Coral Beauty Angelfish, 1 Peppermint Shrimp, 1 Mushroom Coral, 1 Emerald Crab, various snails and hermit crabs. 10 Gallon (Saltwater quarantine):

11-18-2004, 01:55 AM	#8 (permalink)
Pufferpunk Aquarium Advice FINatic Join Date: Feb 2003 Location: Chicago Posts: 642 Images: 11	There are several puffers that are born in [acronym:dab1791366="Freshwater"]FW[/acronym:dab1791366], live their juvenile years in BW & their adulthood in [acronym:dab1791366="Saltwater"]SW[/acronym:dab1791366], only to go back to [acronym:dab1791366="Freshwater"]FW[/acronym:dab1791366] to reproduce. __________________ The Puffer Forum http://www.thepufferforum.org/ Pufferpunk's Tanks http://wetwebfotos.com/Home?actionRe...ew&userID=1918

11-18-2004, 03:00 AM	#10 (permalink)
Lady Elizabeth Aquarium Advice Regular Join Date: Sep 2004 Location: philippines Posts: 88 Images: 13	thanks for the info guys... maybe if any of you were able to find other species of fish that can adjust from [acronym:71a0b2b59f="Freshwater"]FW[/acronym:71a0b2b59f] to [acronym:71a0b2b59f="Saltwater"]SW[/acronym:71a0b2b59f] you can place them here so that everyone can learn about them that would be cool

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