dango697

I currently have a 20 callon tank that is cycled and i have had in it for a year now 3 pristella tetras 2 black phantom tetras 2 zebra danios just wondering what would be a good fish i could add to the tank that doesnt need to be in a school tht will be compatible with the fish i already have

Thanks Daniel

Lucy

Hi dango welcome to FishLore
Sorry, I can't help with your question but I'm sure other members will have some suggestions for you.
Best of luck with your tank and I hope you share some pics with us.

MaddieLynn

Maybe a gourami?

peacemaker92

WELCOME TO FISHLORE!

I like Maddie's idea of a Gouramie. Maybe a Pearl or a Dwarf would go nice I'd suggest getting a Dwarf Gourami and 4 more Danios. Best of luck!

aquarist48

Welcome to Fish Lore Dango. I hope you can share some photos of your tank with us sometime. Enjoy the site.
I like the gourami idea as well. Only 1 though as they aren't to fond of members of their own species. (other than male/female pair)
Ken

Gouramiguy17

wouldn't the black phantom tetras go after the gouramis long flowing fins.

Dark_Rider2k3

Just wondering, but shouldn't the Zebra Danio's be in a school? If so, then get 4 more.

But I don't know what else is good for that tank. But yeah post pics!!

namehater

what about a pleco or cory cats? i would add either a smaller breed of pleco, like a bristlenose, or a small school (3 or 4) cory cats.

MaddieLynn

A dwarf gourami doesn't have "long flowing fins". I think one of those would be good.

Meenu

When I had 2 danios, I had aggression problems. They'll be better in a school. I like the dwarf guarami idea, or the cories.

Jaysee

3 more pristellas, 4 more black phantoms, 3 more zebra danios and a dwarf gourami.

Meenu

Don't you think there will be overstocking issues with so many fish in a 20 gallon tank? That's 18 fish total, and we're not even talking about their adult size.

I just think that your tank is going to be easier to maintain if you don't overstock it, and a healthier living environment for the fish. The fish are small, but I'd still stick with 10-12 max. Just a thought.

Jaysee

Not at all. In fact, according to this calculator, which myself and many others have been quite impressed with, there's room for 7 pristellas, 9 black phantoms, 6 zebra danios and a dwarf gourami. I used glowlights as a substitute for the pristellas. That would be a fully stocked tank that NEEDS excellent filtration. I used an AC50 for the calculation.

http://aqadvisor.com/AqAdvisor.php?A...&AqVolUnit=gUS

You are absolutely right though, that an understocked tank is far easier to mantain and if there are questions about whether water quality will be maintaned, a tank at maximum capacity will fail.

Meenu

interesting site, thanks for posting it!

bolivianbaby

I respectfully disagree with Jaysee. That many fish in a 20 gallon tank may have some issues, mostly with swimming space. The pristellas, black phantom tetras, and dwarf gourami are mostly mid-dwelling species. That's 13 fish attempting to occupy the middle area of the tank. That doesn't leave them a whole lot of room.

Jaysee

I agree that it would be overstocked, but not terribly so. Those tetras don't need as much swimming space as other fish like rainbows and don't need extra room to combat aggression like tiger barbs.

It would probably be best to limit the number of schools to 2 plus the DG.

dango697

thanks guys for all the suggestions i decided the other day and went with a pearl gourami and 2 more zebras they have settled in well now to the tank over the last few days

yhbae

From bioload-perspective it might be ok but as someone posted here, it may crowd some sections of the tank too much. The site currently holds data for each species where they usually occupy but it doesn't use it to generate any warnings yet if it is "too crowded". Some day, I'll get a chance to look into that too...

Blub

I am not terribly impressed with that calculator - it gives some pretty inacurate results sometimes, and does not take into account additional factors like plants, water changes etc... And the compatibility part isn't good either - aparently i need at least 9 black phantoms for them to be happy in a school (9 BPTs isn't a bad number, but not the minimum) and that they are too aggresive to co-exist with my cherry barbs. Not so! They're the most timid fish I own. IMO 7 pristellas, 9 black phantoms, 6 zebra danios and a dwarf gourami is too much for a 20gal in both bioload and space issues. Anyway, we are going a bit of topic here and that is for another thread, so I'll stop.

I think bump all the schools up to 5-6, and maybe a dwarf gourami. They would be pushing it though.

yhbae

I'm going off the topic here too so I'll keep it short - thanks for the comments, and those concerns will be addressed in the near future if they do make sense. I do collect everyone's feedback. Perhaps we can talk more about it on the right thread.