Highest and lowest bioloads?

BioHazard

Here and There
Mar 15, 2009
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Just curious. What do you feel are the highest bioload fish? What are the lowest bioload fish? I hear inverts tend to be overall lower in bioload, but which are the highest and lowest?
 
I'd have to say plecos oscars and goldfish are up there.
 
highest bioload generators
in no particular order
Oscars
goldfish
 
ounce for ounce i have to say goldfish. nasty lil buggers.. with all due respect to you goldie lovers out there i wouldnt have one in my tanks
 
Neons seem pretty low, even for their tiny size, but you could probably do easily twice the inch per gallon "rule" with neons. That rule seems to work best with about 3-4" fish IMO, smaller than that, and you can stock more inches, larger, and you can stock less inches.

Of course there are variations between fish. I look at my neons, and they're hardly ever pooping, and eat very little. The swordtails and mollies on the other hand, are pigs, and almost always have a string of poop hanging out.
 
Neons seem pretty low, even for their tiny size, but you could probably do easily twice the inch per gallon "rule" with neons. That rule seems to work best with about 3-4" fish IMO, smaller than that, and you can stock more inches, larger, and you can stock less inches.
Inch per gallon is useless IMO. As far as inverts having a low bioload I don't think snails shold be included there, especially briggs/diffusa they have a rather large bioload.
 
SWAG here: based on the assumption that the general rules for assimilation of nutrition as a function of the food's place on the pyramid apply - so, on a pound for pound basis:

Vegans are going to be the messiest - GF, Common Plecos, Algae eating shrimp, M'bunas

Omnivores will be a little less prolific poopers - Tetras, Rasboras, Barbs, omnivorous shrimp and other inverts

Crustacean specialists - a little messier than pure carnivores because of having to deal with some "extra roughage"

Pescivores and Assassin snails - probably the "snakes" of the aquatic biome. They stuff their prey down, then spend time digesting... not much out the rear end.

Lower still - chlorophyll loaded symbiotic organisms (corals, anenomes etc.).

Lowest, Autotrophs.
 
Interesting. I've heard that herbivorous shrimps are pretty low on the bioload scale, but perhaps it's higher bioload on the invert scale, lower bioload on the overall scale. I figured goldies would place high, but I'm surprised by plecos. Ive never owned one, so I wouldn't know. Very interesitng. Anyone else?
 
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