how many fish in a 20 gallon high aquarium

[UkiahTheTurtle]

I understand that but you want to add 2 more, best do it weeks apart not at the same time.

ok I know that i think i payed the price by adding the fire fish and yellow watchman goby both at once impretty sure the goby did not make it

 

[UkiahTheTurtle]

You could always add another Oscellaris Clown or two.

Really? it thought it was one clown per 10 gallons of tank space?

 

[Clownfish_Boy]

Really? it thought it was one clown per 10 gallons of tank space?

Woops, I momentarily forgot we were talking about a 20g ! But the Oscellaris clowns seem to get along just fine in small tanks at the LFS.....

 

[Hermie]

the fewer the better IMO, like take your time, because 20G is not that big

 

[Clownfish_Boy]

In my 60g my max population is always 6-7 fish.

 

[Fish_Sticks]

I'd start with one and see how it goes from there tbh. Add one or two a month to prevent an algea explosion. Make sure to add some grazers, like a lawnmower blenny toward the middle or end.

 

[UkiahTheTurtle]

I'd start with one and see how it goes from there tbh. Add one or two a month to prevent an algea explosion. Make sure to add some grazers, like a lawnmower blenny toward the middle or end.

does a tail spot blenny graze on algae?

 

[UkiahTheTurtle]

How many fish Then in a 20G tank then!?

 

[chanathon]

I would err on the safe side and go less. There's no real rule. You have to take into consideration swimming space, territories, and nutrient levels. Also if you think your watchman goby is a goner, you may want to check parameters for ammonia/nitrate spike before adding anything else. You could probably get by with a tailspot if everything's stable, but I think you're pretty full at the moment.

 

[UkiahTheTurtle]

All parameters are great and have been since the cycle

 

[Reef.]

Woops, I momentarily forgot we were talking about a 20g ! But the Oscellaris clowns seem to get along just fine in small tanks at the LFS.....

that’s because they are babies, as they grow is when the fighting starts.

 

[Pistol Peet]

I think I saw something one time that said 1 in of fish for 1 inch of aquarium space yeah I'm very very sorry I even said that. didn't help me much either make sure they have enough room to hide. And still be comfortable. not get too territorial and make sure to keep your nutrients in check. I've never seen something that actually says a 20 gallon tank should have or can have this many fish or a 200 gallon tank can have or should have this many fish a lot of it depends on the type of fish the size of the fish you are adding and the type of filtration and how good a filtration you have

 

[Clownfish_Boy]

that’s because they are babies, as they grow is when the fighting starts.

Oh yeah, generally it is best to keep only one clown in a tank. I now just picked up a Maroon Clown today at the LFS; and will never be able to put another clown in the tank (as Maroon Clowns are not tolerant of other clowns in a tank).

 

[UkiahTheTurtle]

I think I saw something one time that said 1 in of fish for 1 inch of aquarium space yeah I'm very very sorry I even said that. didn't help me much either make sure they have enough room to hide. And still be comfortable. not get too territorial and make sure to keep your nutrients in check. I've never seen something that actually says a 20 gallon tank should have or can have this many fish or a 200 gallon tank can have or should have this many fish a lot of it depends on the type of fish the size of the fish you are adding and the type of filtration and how good a filtration you have

I have a marine land 30 penguin filter stuffed with Biological filter media and a chemical filtration for a 50 gallon and 2 250gph power heads also the filter is 150gph and 25 pounds of rock and my tanks been running for 6 months and i plan on adding a protein skimmer.

 

[Hermie]

I think I saw something one time that said 1 in of fish for 1 inch of aquarium space yeah I'm very very sorry I even said that.

That rule was an excuse I used to overstock my FW tank and it ended up killing a bunch of fish