So what would you stock a 40 gallon corner tank with?

How about a pair of angels? You would have a lot of choices for dithers that way- most tetra species work great with angels except for neons. Add a school of corys for your bottom feeders and you're set. If you want something different, order a pair of apistogramma from aquabid.com (I seriously doubt that Petco can get those for you). Apistos are South American dwarf cichlids, and even the largest apistos that I know of stay under 4 inches. Many apisto species are very colorful too. A pair of keyhole cichlids would be nice too, they are very gregarious and interesting to watch. Plus, they stay pretty small; 4.5 inches or less.
 
angels would be great!!!!
Im thinkin about maybe letting my parent choose a few fish
 
if you are gonna go with angels, get three of them. Angels can be agressive with one another, especialy in a tank that doenst have a big footprint like a corner 40g. You want three so that you will have a fish that is the boss, and devides his beatings between two fish. This way, no fish is picked on too much. More rarely, you will have a paper rock siscors relationship. Fish A beats up on Fish B, Fish B beats up on fish C, fish C beats up on fish A. You don't want one fish that is beating up only on another fish.
 
if you are gonna go with angels, get three of them. Angels can be agressive with one another, especialy in a tank that doenst have a big footprint like a corner 40g. You want three so that you will have a fish that is the boss, and devides his beatings between two fish. This way, no fish is picked on too much. More rarely, you will have a paper rock siscors relationship. Fish A beats up on Fish B, Fish B beats up on fish C, fish C beats up on fish A. You don't want one fish that is beating up only on another fish.
can you keep one angel without any other angels?
 
I would stock it with all kinds of dwarf and pygmy fish. So it would be something like...

12 pygmy cories
3 sparkling(pygmy) gouramis
12 neon dwarf rainbowfish
6 otocinclus(dwarf suckermouth catfish)
And then your swords, which would be the kings and queens of the tank.


If you haven't noticed, I'm kinda in a dwarf/pygmy fish stage right now.
 
if you are gonna go with angels, get three of them. Angels can be agressive with one another, especialy in a tank that doenst have a big footprint like a corner 40g. You want three so that you will have a fish that is the boss, and devides his beatings between two fish. This way, no fish is picked on too much. More rarely, you will have a paper rock siscors relationship. Fish A beats up on Fish B, Fish B beats up on fish C, fish C beats up on fish A. You don't want one fish that is beating up only on another fish.

...would I be right in saying that if you get a mating pair out of the three you want to remove the loner pretty quickly for his/her own sake ?
 
A lot less than what you think you could do to the limited surface area.
 
I think you could consider a pleco that stays small, like a bristlenose. A couple pencilfish, or a headstander. A ropefish is cool. The last two grow larger tho. Just some oddball ideas. Good luck!
 
Yes, you can keep an angel by itself. My angel seems perfectly happy that way.
 
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