My favourite! I love my stomatellas. Wait until you see them spawn in unison. They 'stand' up as high as they can and spawn for a good 2 minutes. Females tend to be larger and spawn visible eggs, males spawn (less frequently from what I've noticed) a milky fluid. Anecdotally they spawn in cycle with the moon and I've observed increased spawning when I've accidentally left a light on all night. Unfortunately my new hermit crabs also love them but for a different reason so I don't have as many as I used to.