snail baby

Alright. Whose baby is this? Found on glass... appears to have an elongated super tiny red shell. This thing is micro ~ literally 1/16th of an inch. Has antennaes. Hitchhiker? Good / Bad? Snails getting busy? Known tank inhabitants (all new within last month) ~ 2 Astrea snails, 1 Nassarius, 1...

Hoping someone can identify what this invert is and if it’s harmful at all. Looks like a slug with a soft shell, snail without a shell.

Hi! I tried to do my own research but I’m coming up with multiple answers, I personally think they’re Astrea Snails or Turbo Snails. My boyfriend thinks they might be Nassarius Snails but my lord we have dozens on dozens of these little guys now. The Nassarius snails are lay eggs everywhere but...