i have my female and male jack male is about 7 the female is about 4. theres is an oscar about 8 to 9 in in there and a bluegill about 3. they already paired off ive tried adding another female and they both run her off. i dont know if the oscar might be a cause of this. they have planty of tunnels where the oscar cant fit and plent of flat rocks the temp is roughly 80 water parameters good. helpp