can these fish co-habitate??

I've seen photos of reef tanks with lionfish. I don't think the lionfish or toadfish is an immediate threat to your corals. I think the primary issue with those fish, as with any predator fish, is the threat to the water quality due to the high volume of food intake and waste. Plus, you won't be able to keep some of the smaller cleanup crews (hermits, emeralds) because the predators will consume them.

 

with lion fish the only real concern would be any fish smaller than them. toadfish ive heard will try and eat any fish and have died because they where to big.

 

I've heard people raising saltwater guppies for toadfish. They love them. If you can get a good breeding population going before you get the toadfish/lionfish you could give it a try. They are pretty slow swimmers so I don't immagine it would be hard to net out later and find a new home for them. I was thinking about getting a dwarf lion for my propagation tank when I get it going sometime soon for a different look. After it's been in there for a while and it's used to eating frozen I might give it a try in my reef tank. The smallest fish I have is a 2 to 3" neon goby...

 

Let me know if you are gonna be ordering one after a while, I'm gonna buy a few fish in a week or two, we could combine an order beings we live blocks away...

 

mollies are easy to convert to saltwater and do better then guppies and have lots of babies I have alot of mollies in my refugium which i  occasionaly feed to my lion fish in my fish only tank
i think joel has a lion fish in one of his reef tanks