yes a 75 is fine for caribe
i think joe maybe right about overstocking a 75, 1. you would need mega filtration and 2. 10 may get cramped when they get 12"+
i would deffo not put less than 6. 6 sounds better, they wouldnt be cramped but at the same time they wouldnt have the room to set up their own little territories and end up fighting
you could do 3 reds and 3 caribe
i think joe maybe right about overstocking a 75, 1. you would need mega filtration and 2. 10 may get cramped when they get 12"+
i would deffo not put less than 6. 6 sounds better, they wouldnt be cramped but at the same time they wouldnt have the room to set up their own little territories and end up fighting
you could do 3 reds and 3 caribe