Fish compatibility

[Rainbow_fish]

I have a 3ft tank with 109litres and have a 15cm (approx) Barcoo Grunter. I used to have a 12cm archer fish and 14cm purple spot gudgeon. The B.G. Bullied the archer to its death but never harrased the purple spot. Not i have got 2 17cm tandanus catfish and 3 mouth almighty approx 10cm. Should they be ok? Other wise i will get rid of the B.G. The other fish are floating in a bag at the moment.

John

 

[Rainbow_fish]

Unfortunatly, my 3 mouth almightys dies. I did read that they are not easy to keep alive after catching but i still have a small baby in another tank so will see how he goes.