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HAs anyone ever used Freshwater Molly's in their saltwater tanks.. Was over a friends house over the weekend and she was acclimating them to her saltwater fish tank. She mentioned they are like little lawnmowers..

 

I was interested to know everyone's opinion on this..

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Pinner Reef

HAs anyone ever used Freshwater Molly's in their saltwater tanks.. Was over a friends house over the weekend and she was acclimating them to her saltwater fish tank. She mentioned they are like little lawnmowers..

 

I was interested to know everyone's opinion on this..

 

We were just talking about this :lol:

 

http://www.nano-reef.com/topic/372904-adding-a-molly-to-reef-tank/

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Hhaha I just asked this as well. I'm looking for another fish to round off my stock. And came across a build thread that had mollies in it.

How funny!!

 

I am interested in learning more, this is so cool.

 

Thanks guys.

 

Sandy

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Yea thats what I thought. But many said compared to saltwater fish they aren't aggressive and will most likely get picked on. But I've seen post where people just toss them in a tank to acclimating up to a week. So it's kinda hard to find any accurate info. But looks like they were used to cycle tanks in the past.

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jedimasterben

They are definitely lawnmowers. Anecdotally, they will grow larger in full strength saltwater, but they'll already get in the 5-6" range for sailfins, and they can be complete assholes to other fish - I had one that was around 3.5" and it was constantly beating the shit out of my rabbitfish. It left the trigger alone, though :D

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They are definitely lawnmowers. Anecdotally, they will grow larger in full strength saltwater, but they'll already get in the 5-6" range for sailfins, and they can be complete assholes to other fish - I had one that was around 3.5" and it was constantly beating the shit out of my rabbitfish. It left the trigger alone, though :D

I find this hilarious, as it was my rabbits that were doing the picking on my mollies. Smart to leave the trigger alone though...lol

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  • 1 year later...

Anyone that keeps mollies in their saltwater want to add to this discussion?  I would like to add one to my nano with my two other fish. A  clown fish and a goby.

 

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Mollies are brackish water fishes and will live in salt water. We used to use them to cycle tanks in the past. Not the nicest looking fish for a marine tank I M O. But to each his own. Good feeders for lionfish or other predators. 

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Sailfin mollies are a little more attractive and do pretty much the same job. 20 years ago before fishless cycling was such a big thing, people used to use mollies to cycle their tanks and eat algae. There are articles on acclimating mollies to either fresh or salt water, so even if you do want a few as temporary fish to do the aforementioned jobs of cycling or eating algae, they don't have to be permanent additions to your tank. They can be easily re-homed.

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