aren't nymphs considered runts ? you should try to get jikins or some quality cometsThey swims very smoothly but their eyesight isn't that good. I hasn't introduce them to the goldfish tank yet since these ones came from Walmart and they need to grow a little bigger because there's a larger mudminnow in the goldfish tank. I managed to got another nymph goldfish.
have you looked into jikins or walkins? those things look cool and not deformed at all. i would like to get one once i figure out my living arrangementsNo, nymphs are not runts, just cull/less quality ones. A inferior cull, yes but a man's junk is another man's treasure. I'm just growing them out to just prevents the mudminnows to prey on them.