Hey everyone, I have a 26.5-liter (7-gallon) aquarium with a built-in rear sump filter.

I have one female betta, one ampularia, and two Neocaridina shrimp (one of them has died minutes ago).

My nitrite and ammonia levels are close to zero, and my pH is between 7.0 and 7.5.

Tonight, I noticed a white, ghost-like exoskeleton in the tank, and then I found the body of one of my shrimp, apparently missing its head.

I’m not sure whether it had trouble molting or if my betta attacked it. I think the betta attacking it is unlikely because she has always completely ignored the shrimp.

I still have one shrimp alive.

Has anyone experienced something similar? Could this have been a failed molt, or is it possible that the shrimp died for another reason and was partially eaten afterward? Any advice would be appreciated!

wild caught longclaw thing