Mine looks just like this (about 3 months old and 1.5 - 2 inches) but paler with less visible spots. Mines a more sandy-brown colour. My BN also has no bristles so I've made the assumption that it's a female Not sure what subspecies it is within the genus, though. I always thought it was pale when I got it because she was probably scared out of her wits but she never got any darker.
Can you be more specific as to what kind of Corys & what kind of Tetras? Rule of thumb is you should have at least 6 of each of those two fish for sure. I'd plan on getting 4 more of whatever Cory you have first & foremost.
1 mickey mouse platy(female)
4 red platys(1 male 3 females)
2 black mollies(1 sailfin male and 1 normal female)
3 normal platnium mollies(females)
5 tetras(which i cant find the species of)
2 albino cory cats(plan on 2 or 4 more first)
the tetras are green or gold(im kind of colour blind) with small black spots all over them.
here is a quick picture i took, the best i could get as they NEVER stay still.