Some cool snails I caught in Dniester River (Tiraspol, PMR). The long black ones are Melanopsis praerosa and the tiny ones are Theodoxus fluviatilis, which are actually fully freshwater nerites. The small dots you seen on Theodoxus fluvatilis are actually their eggs. Yes, they like to lay their eggs on top of each other for some reason. Not sure why.
Here are some of the larger snails. Honestly, I am not sure what they are. Some sort of trap door snails. Probably related to apple snails. There were a ton of them all over Dniester
Another look at the trap door snails. If anyone know what they are, please let me.