About the one inch of fish rule...

blennybabe

blennybabe

Member
Does a one inch neon goby count the same as a one inch damsel? (I know they get bigger, this is just for an example.) does a convict blenny thats 5 inches long but only 1/2 an inch tall count the same as a 5 inch tang? Im asking because I really like the smaller fish and I would like to be able to put more in my 75 gallon. Thanks for your help.
 
clarkiiboi

clarkiiboi

Active Member
no answer but good question, I never looked at it that way. Always looked at it in length not height added into the theory. Anyways I do know its recommended that it is 3-5 gall. per inch of fish. (no matter how the inches are considered) and that you calculate inches by the mature length the fish will be. ;)
 
heavenly damsel

heavenly damsel

Member
The rule of thumb is based on the amount of bioload they will create. One big fish will make one big poop, 10 little fish will make 10 little poops...it's all still poop! Overcrowding your aquarium will lead to a tank crash. Your aquarium...your choice. HTH
 
broomer5

broomer5

Active Member
I've always stuggled with the gallons/inch rule of thumb.
Matter of fact - most rule of thumb guidlines, although allow for a "starting point" are pretty meaningless.
Where in the inch per gallon rule does it mention overfeeding, underfeeding or feeding at all.
Fish poop when fed.
Fish poop more when overfed.
My Clarkii Clown eats like a pig, get's the lion's share of food placed in the tank, is about 4" long, and craps like a goose.
In comparison, my 1-1/2" Yellowtail Damsel, 3 inch Royal Gramma, 2" Firefish and 2 inch Bangaii eat very little.
I agree with Ed that bigger more massive fish create more waste than the equivalent number of 'inches' of smaller fish.
They normally eat more.
 
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