You don't need the vent with this fish, it would help but you don't need it. It's body structure, head shape, body length and fins are enough to accurately sex this fish
Male petsmart midas/red devil have a thicker body and have longer dorsal fins, not to mention that their head has more of an upward slope from the nose to the forehead. This fish has a long snout then the upward forehead.
Beautiful fish, keep us updated
Male petsmart midas/red devil have a thicker body and have longer dorsal fins, not to mention that their head has more of an upward slope from the nose to the forehead. This fish has a long snout then the upward forehead.
Beautiful fish, keep us updated

If you know your species and which characteristics to look for between the sexes visually you CAN sex Amphilophus species

