Native algae eater???

  • We are currently upgrading MFK. thanks! -neo

Leo1234

Plecostomus
MFK Member
Jul 26, 2013
376
58
61
California
I was wondering if there was a native fish that would eat algae in a 20 u.s. gallon aquarium. Also it would need to only eat algae and/or meat (bloodworms, etc.) because this is for a planted aquarium kept at room temperature. Also right now there are a black crappie and a warmouth sunfish in the 20 gallon ( don't worry, I know that they need a bigger tank. I have a tank for them to go into when they are bigger. the 20 is a growout tank for those fish) I have tried american flag fish but i never have been able to keep one (even though i have tried to keep one, that one died 2 days later). Thank you for posting on here
 
For a 20 gallon, my only suggestions are sailfin molly and flagfish. I kept and bred flag fish for years and never saw much algae eating (although they destroyed Vallisneria). I only kept sailfin mollies for a year. But they were wild-caught and chowed down on algae I had in a slighty brackish tank.
 
Central stoneroller (Campostoma anomalum) are US natives that eat only algae, stay relatively small and are active.
 
Central stoneroller (Campostoma anomalum) are US natives that eat only algae, stay relatively small and are active.
Stay smaller? The central stoneroller do get up to 10-12" so no I don't recommend them for a 20gal tank. American flagfish and mollies are your best bet, tho they do not eat all kinds of algae.
 
don't mollies and flagfish need basic water? I do not think it's a good idea for me to get mollies and flagfish because i never had any good luck keeping them. I have had a sailfin molly, but it died after 5 months ( I don't know why it died, I just found it in a log 2 weeks later. Mabey old age? It was a male sailfin at 5inches) and recently I had an american flagfish, but it only lived 2 days... It wouldn't eat anything I put in there, even the algae flakes. It only ate a small patch of hair algae.
 
Just because your first flagfish died, doesn't mean you can't try them again. That flagfish were probably suffered from internal parasites. If you had the old molly for 5 months then you will be fine with the future mollies.
 
I never said "stay smaller" I said "relatively small". Central stonerollers do not get up to 10", ever. They have an absolute max of about 8.5" but rarely get over 6". Also you'll notice if you actually read the OP's posts he says he is upgrading from the 20 gallon. Quit acting like you know more than everyone.
 
Central stoneroller (Campostoma anomalum) are US natives that eat only algae, stay relatively small and are active.

I totally agree a Central stoneroller would be a good candidate as long as the Crappie and Warmouth aren't to big....if they are bigger than 8 inches unfortunately any flagfish, mollies, and stonerollers will probably end up being lunch sooner or later.
 
I never said "stay smaller" I said "relatively small". Central stonerollers do not get up to 10", ever. They have an absolute max of about 8.5" but rarely get over 6". Also you'll notice if you actually read the OP's posts he says he is upgrading from the 20 gallon. Quit acting like you know more than everyone.


That is completely unnecessary. MN is not only being helpful but Realistic!



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