i looked for the damsel on google and found this. I hope this helps you out.
Quick Stats
Minimum Tank Size: 30 gallons
Care Level: Easy
Tank Conditions: 72-78°F;
sg 1.020-1.025; pH 8.1-8.4; dKH 8-12
Temperament: Aggressive
Max. Size In Aquarium: Up to 4"
Reef Compatible: Yes
Diet: Omnivore
Compatibility: View Chart
Origin: Red Sea
Family: Pomacentridae
The Marginated Damselfish, is also known as the Marginate Damselfish. This beautiful fish has a white body trimmed in black with yellow and light blue highlights edging the scales on each side of the body.
A 30 gallon aquarium or larger with plenty of rockwork and décor is ideal. Because it can tolerate substandard water parameters, it is a popular fish used for conditioning new aquariums. A small group of juvenile Marginated Damsels will add color and drama to most marine aquariums. Maintain this species with other semi-aggressive or aggressive fish, as they will become territorial as they mature.
The Marginated Damselfish feeds on a variety of meaty foods, herbivore preparations, and flaked foods.