Hi I just bought a dojo loach for my 10 gallon, already has a blue Opaline Gourami and 6 zebra dinos. The gourami is kinda aggressive killed and angel fish I put in there. Anyway I want wondering what kinda caves should I put for borrowing. He seems to have made his own under a big rock i have. Also is he in any danger from my Gourami? He's anout 4in long.