Depending on the spiders natural breeding cycle and what species of fish they normally prey on, they might be able to start with the fry of small fish (some of these are really tiny) and work their way up?Hi,
feeding fish can´t be the only solution, in my opinion, as the spiders can take down fishes just from a certain size on. So what to feed them while they are still smaller....
It does seem a bit of a fussy way for nature to take it's course though. Maybe try them on some guppy fry?
Good luck with them. I'll be interested to hear how the slings progress.