why the rule inch per gallon doesnt work.....

No, I never gave a number. 5 adult guppies in a 30long wouldn't be overstocked, IMO, if it was filtered. I was thinking a few hundred guppy fry to become feeders for something else. In such a case, yes, overstocked, but the fish aren't going to live forever anyway, they become someone elses dinner.
if that was the case at that size no it wouldnt be over stocked look at the 1st one you should be able to tell the tank is pretty much empty give it a small group of fish on the side.
 
I think the only thing that can really be said is "Herp de durp!"
 
Yea, I know. That's why I wanted the size and species. Never make an uneducated response in such scenario.
 
Looks like a 240g or so wiht a few hundred ember tetras (H. amandae).

People are constantly asking me if 10 chili rasboras will overstock their 10g, so I do think the thread is relevant.


As much as we all SAY the inch per gallon rule is bunk, I think a lot of people still use it mentally.
 
you can see the size of the fish vs the tank the rest doesnt matter right now does it.....

No, it doesn't. You would never think that the 4in Glass Cat could live in a 10gal comfortably. Or that the 2ft Dojo Loach is fine in a 30. It's always best the find out the species and tank size, because size doesn't matter, activity does.

Looks like a 240g or so wiht a few hundred ember tetras (H. amandae).

People are constantly asking me if 10 chili rasboras will overstock their 10g, so I do think the thread is relevant.


As much as we all SAY the inch per gallon rule is bunk, I think a lot of people still use it mentally.

I try to use that rule + filtration + activity levels. It's worked for me so far.
 
When all is said and done, common sense should prevail. The point is well made!

I kept 150 Moscow guppies and 25 cories in a 29 that was heavily planted. It was not overstocked although the numbers are scary. Water changes could go 6 weeks and still not show ammonia. And yes, they still had more than enough swimming room.
 
Well that's not that bad. I spent all that time waiting for the pic to load and it's just a bunch of fry in a bare tank. Big deal, breeders do that all the time to grow them out or to keep feeder fish. As long as there is good filtration and water movement, who cares.
I have a 40b with at least 30+ Platy, adults and fry of all ages, the tank is well planted and has wood. But most of the time you cannot even see a single fish. No, not hidden, but eating and pecking around on all the stuff in there.

I think if the fish were 1in cubes with some real weight/dimension to them and not thin little squirts, an inch per gallon would be out of the question. It should be more like an inch per total surface area of a fish. That would make more sense. Or inch/gallon calculated for LxWxH w/all the inner mass of the fish.
 
It's always hard for me to remember how big fish actually are. Neon tetras seem a bit smaller than an inch, glowlight tetras slightly above an inch. You could put 20 neon tetras in a 20 gallon no problem, but 20 glowlight tetras would look much more crowded. That's because girth is what really matters, even in small fish....

It's a very simplistic rule that works for slender fish in small tanks. There is a much better one somewhere, using cubic inches I believe...can't remember and Google isn't helping right now :(
 
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