1. Look at the pectoral fins

The pectoral fins of the male red dragonfish appear dark red, while the pectoral fins and head of the female red dragonfish are lighter in color than those of the males;

2. Look at the length

The body of the male red dragonfish is longer than the female's;

3. Look at the mouth

The male's is larger than that of the female's. The female's is also larger than that of the male.

Male Red Dragonfish

Female Red Dragonfish

Expanded Information:

Red Dragonfish Habits:

Dragonfish is a carnivorous fish, so it has a more serious impact on water quality . Under such a premise, the filtration of the fish tank becomes particularly important. Need to do wet and dry separation, as much as possible, so that the bait residue and fish poop cleaned out, thus reducing the ammonia content of the water, to maintain water quality. The white cotton for wet/dry separation needs to be cleaned or replaced regularly.

As a juvenile, the red dragon's fins are a pale golden green color, the edges of the scales are slightly pink, and the mouth is light red. As an adult, the body is golden yellow with a slight golden-red scale frame around the edges of the scales, the mouth and gill covers have special crimson markings, and all fins are crimson in color. The color of the fins and scale frames of each part can be classified as orange, pink, crimson and blood red, and the whole body shines.

Baidu Encyclopedia - Red Dragonfish