When I started this tank, I added Nerite snails as part of the algae crew. There were some concerns that they will end up as Arowana snacks as I’ve seen my previous Arowana chomping on something and saw what I thought were snail shell fragments dropping from its mouth. Still, I decided to try out the Nerites as they are somewhat larger than the pest snails in my previous tank and have much thicker shells. Unfortunately, I never got to find out as the snails died before the Arowana was introduced. Thinking that my tank conditions were not suitable for snails, I never got new snails till now.