<a href=showthread.php?s=&postid=14330477#post14330477 target=_blank>Originally posted</a> by chalaco
What kind of fish and how many should I have with the seahorses? I know I have to feed
quite often so would like fish to clean up in case I over feed or food strays away from seahorses.
Depends on the setup and how many seahorses you have.
Get something to stir the sand, I like yellow watchmans (other watchman's are not so good) and twin spot goby's for this myself. A pistol shrimp with the watchman can be very entertaining.
Get snails to eat detritus and algae off the rocks. If it is a glass tank you could do a pencil urchin as well.
As for fish, there are not many that do anything but add to the bioload speaking in those terms. It's always fun to have otehr fish in there to, but they are more for being pretty then helping out. Most of the algae eating blennies are a no go IME, as they typically setup shop in an area and are very territorial of that. For some reason there area always seems to be the feeding dish, then they start attacking the seahorses as they go near it. JME
Other great herbivoures like tangs or foxfaces, just don't work with the horses.
Peppermint shrimp are a great companion as they not only clean up, but also help to reduce aiptasia which IME have the potential to be very harmful towards seahorses.
I would avoid all crabs IME.
In a 150, 8 seahorses, a twin spot, a yellow watchman pistol pair, 10 peppermint shrimp, 10 to 15 naussarius snails (depending on size) 15 cerith, maybe 5 or 6 netrite snails, and 10 astrea's would be a good start and a fairly manageable bioload IMO. Just depends on how the tank is setup.
Read and enjoy the article linked, if you see anything you like or having any questions let us know and we can help you out with it. In a tank your size you might be able to get away with some of the 2's and 3's that you could not in a smaller tank, but I'l help you out if I can.
HTH
Kevin.