What fish eat waste in aquarium?

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If what you mean is, are there any fish, that eat fish waste (feces).
None
If you mean, fish that eat uneaten fish food, plant scraps, etc, then yes, some plecos and other bottom dwellers, but then they produce at least the same amount of waste, that they have eaten.[/QUOTE
thats not very true.... No offense. Tilapia will eat their own feces and can. Be happy as can be. Obviously you want to feed them NLS or something to break it up
 
:ROFL: there only one way to remove poopies, vacuum it out, great for the garden if so inclined. on the pleco thing, i have about a 10" common that I move from tank to tank, he is my rogue pleco, and he keeps the tanks pretty cleaned up for algae. yes he poops, easier to clean up that trying to brush the back of my tank, or clean my intakes.
 
If what you mean is, are there any fish, that eat fish waste (feces).
None
If you mean, fish that eat uneaten fish food, plant scraps, etc, then yes, some plecos and other bottom dwellers, but then they produce at least the same amount of waste, that they have eaten.[/QUOTE
thats not very true.... No offense. Tilapia will eat their own feces and can. Be happy as can be. Obviously you want to feed them NLS or something to break it up

Forcing a fish to eat feces and them wanting to eat feces are two different things. I'm not sure where you get your facts, but I'm sure they don't go searching out feces in their natural environment.


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There are species that follow other species for the purpose of eating feces. They do so to take advantage of unmetabolized nutrients remaining in the fecal matter. Tilapia and Labeo (Morulius) follow hippos for this purpose. There are also substrate sifters (Geophagus and others) and detrivores (Scatophagus and others) that will take advantage of unmetabolized nutrients and the simple sugars produced by bacteria breaking down fecal matter.
There is no species that will remove all fecal matter since there's no advantage in consuming fully metabolized (digested) material.
 
There are no hippos in the tank and most fish are fed with processed food that is 99.9 % digestable. Fish feses has nearly zero unmetabilized matter left. If you feed your fish with raw meat and vegetable, that is another story.
 
There are no hippos in the tank and most fish are fed with processed food that is 99.9 % digestable. Fish feses has nearly zero unmetabilized matter left. If you feed your fish with raw meat and vegetable, that is another story.

You never know what oddball has in his tanks.

Also if the setup is of the planted variety, then generally one does not worry about fish poo...




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most fish are fed with processed food that is 99.9 % digestable. Fish feses has nearly zero unmetabilized matter left.

This is conditionally true. However, highly digestable prepared foods that are high in proteins leads to the presence of unmetabolized nutrients in the feces of species that require less proteins than those contained in the processed foods. Feeding schedules for mixed comm populations with mixed metabolic rates will lead to fish with slower metabolic rates evacuating nutrients due to being deprived of sufficient time to fully process the nutrients before the next feeding.
 
Forcing a fish to eat feces and them wanting to eat feces are two different things. I'm not sure where you get your facts, but I'm sure they don't go searching out feces in their natural environment.


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FYI in Japan and China the tilapia farmers deficate in the tilapia ponds.... They have found lets just say... Black dots in the tilapia flesh
 
I swear the niger cat I used to have ate poop. I had 4 15+ inch plecos... I saw poop. After putting the niger cat there all the poop disappeared.
 
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