neritina pulligera also called military helmet snail, neritina pulligera dusky nerite freshwater snail in the aquarium

algae animal anthracite apple aquarium aquatic beautiful beauty black brown close-up closeup color colorful dusky eating exotic fish freshwater helmet limpet macro military mollusks natural nature nerite neritidae neritina pet plant plants pulligera shell snail snails steel tank tropical underwater water white wild wildlife