Can I have top dwelling fish?

[joemamauggly]

I have a 20 gal tank fully cycled. I have a 6 neon tetras, 3 platys and 3 what may be plays or guppies I can take pics later if needed. I also 3 pepper cories and a baby female betta. A snail and a striped pleco. I have a fluval 30 gal filter 6 or so plants a ceramic cave and some driftwood, realistic gravel. The problem is that I'm temporarily housing a red tail shark. Am I capable of adding more fish? Also any other tips or advice you have are greatly appreciated. I really like the idea of having more top of the aquarium fish since these guys are mostly lower dwellers.

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[Exigenn]

Depends what it is but plecos have a bit bio-load.


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[CowMoo]

What top dwelling fish do you want?

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[joemamauggly]

Any really nine of mine stay top of the tank

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[CowMoo]

How long is the tank?

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[CowMoo]

if the tank is a rectangle I would get a school of marbeled hatchetfish.

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[sinibotia]

Guppies and platys (and mollys) are typically considered top dwelling fish. The only fish I can think of that stay at the surface all the time are hatchetfish but they're sort of delicate.