Hatchet and Danio species tend to be surface dwellers.
Personally, I think Marble Hatchets are gorgeous fish.
Kuhli loaches do fine on their own, bu when in a group they become more rambunctious and active, like most shoaling or schooling fish. These fish become more relaxed with their environment with more of their species around.
I have male endlers in my 30g (mostly) nano-fish tank and they hang out near the surface a lot.
Another one you might like would be Ember tetras, mine are all over the tank, though i guess mostly in the middle.
Boraras do not swim near the top though, at least mine don't. They generally stay in the bottom to mid-region. They were always hiding in the bottom corner of my tank (even before i added zebrafish or guppies) but they are slllloooooowwwly getting more adventurous, I seem small groups of them in the mid-water and on the other end of the tank now. But they definitely don't hang out near the surface. Mine don't anyway. And no, they're certainly not food for a sparkling gourami, i have one in my tank and he's not much bigger than the boraras....well certainly not big enough to think that they're lunch!
clown killies are gorgeous just expensive and rare and im unemployed now
hatchets are not my sort of fish just kinda not proportioned right and a little to big i think for a 20 gal H
dont want zebras more all over the tank not just the top
endlers or those other microrasboras are possiblities its just dont they go everywhere in the tank?? this fish really needs to be like a super top water fish. (at least id like it to be to balance the fish in the tank)
what are norman lampeyes and microrasbora gatesis? and how big do they get?
I hear the microrasboras (nanas, gatesis, kubotais) will stay near the top, but not the boraras sp. Clown killies are guaranteed.
I apologize, I meant to say my microrasboras, i have Boraras brigittae, definitely micro! And they don't stay anywhere close to the surface. I suppose it's possible i could just have weirdos, but I thought i'd mention it
My endlers are quite often at the surface, you are correct though that they go all over the tank as well, but mine are near the surface more than 50% of the time i'd say. If you want something that truly only ever stays near the top, and is relatively easy to find for not too much $$ you'll probably have to go with something like a hatchet though i think.
what the hell spam? yeh thanks karackle i think you are right when you say only hatchets will only stay at the top, killies too but as kyle said most are suitable for only species only tanks .
how many marbled hatchets would i have to have to make them feel comfortable? and is a lid with the back open ok ive heard they like to jump and am also quite concerned because i have wires on the inside of my lid, no glass between my DIY lights and the water (the wires have no exposed copper showing of course)