Originally Posted by paloverde
The mutant shrimp no longer resides at my home.
Yeah, there are Macrobachium shrimp that look like ghost shrimp but are larger and more aggressive.
I was in Petco and they had a tank with shrimp they called "Ghost Shrimp", but these things were like 3 inches long and one of them was holding onto a dead fish larger than itself and eating it. I'm sure those were probably Macrobachiums. I would not put those with my betta.
The only remaining ghost shrimp that I have now (the other 2 died of "natural causes- not because my betta ate them) is still small, but I think it's the normal size of an adult ghost shrimp (about an inch). Totally docile. I think he hides most of the time. I don't see him for up to a week at a time sometimes. From what I've seen he's never really had an encounter with my betta until a couple of days ago when the shrimp was swimming up near the top, and my betta caught a glimpse of him, so he just started swimming over to investigate, but he freaked out the shrimp and you know how fast they move as if they teleport to the other side of the tank. He did that and Fishie didn't try to go after him or anything.
so yeah, I don't think your shrimp are true ghost shrimp.