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Originally Posted by ZooTycoonMaster
Thought I might as well bump this thread so other people can read it...
What about Bumblebee Gobies or Celestial Pearl Danio?
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They are not safe...tried both...
Bumblebees will eat shrimplets and try to large juveniles and small male dwarf shrimp.
CPDs are awful and will hunt down any shrimplet in your tank. They wiped out maybe a hundred baby RCS in a 20 gallon tank I had within a couple of weeks.
Threadfin rainbows might be safe...I haven't tried these guys yet. They seem like they feed on small floating particles floating in mid-water or at least that's what they do at the lfs.
I've noticed that the size of the mouth isn't as important as how the fish feeds in determining how safe a fish is. A bristle nose pleco has a very big mouth but won't eat shrimp because its mouth isn't designed for capturing food but for rasping at non-moving items like algae. While something like a scarlet badis has a very small mouth but it forages around for small invertebrates and such to feed on in aquariums and they relish live foods. Shrimp count as small invertebrates! A fish such as a hatchet fish is designed to take food floating at the surface and will readily take live fruitflies but a shrimp is safe because they usually don't go up there too often and are fast enough to flick away and I'm speaking from experience.