I usually name them if they make it through their initial quarantine. Sometimes you have to wait a while for their personalities to come out before you can settle on the perfect name. With an entire school of fish though, it's hard to name them... I generally will give the group one name. Since my betta's name is David "Ziggy Stardust" Bowie, I've taken to calling my Black Neons "the Spiders from Mars."
Most of my fish have names, but some I can't tell apart so they remain nameless. No names 12 neon tetras, 3 twin-bar platies, 3 danios, and 4 red velvet swordtails (all female and just bought the other day so haven't had time to name)
I used to name all my fish. Then I had too many fish to keep them straight so it seemed kinda dumb! Plus made it way too hard when I had to sell my breeders to make room for the next generation. I get attached enough to them as it is without naming em. The splendens do have numbers lol. Need to keep track of their parentage!
clown loach ....billy , have an angel i call freckles.ones name is pepper...bettas,lacey,red and grape,bug and prince..cae called slim, glo danio named ogre but the other fish arent named adf named jumper
I tend to generically name all fish of the same species, unless they are remarkably different like my angels. So the 7 black skirt tetras I have are all named Taco. The black angel is named Gabrielle, the White angel is Michael. I have a bamboo shrimp who hides all the time so I named him Waldo.