Length up to 12.5 cm, dark gray to black, but centers of scales on body are whitish.

In cases where the male is not present, females may develop more aggressiveness depending on the situation.

This increased aggressiveness is more favored towards the larger females, however the correlation isn't terribly strong between size and nest defense.

[4] Dascyllus albisella displays aggression by making chirping sounds.

The fact that they make different aggressive sounds towards other species shows that they are capable of distinguishing themselves from one another[4] Dascyllus albisella are also known to hold territories.

A territory holder will interact aggressively only when other fish attempt to enter its domain.

In these juvenile interactions we see that Dascyllus albisella form a size based linear dominance.

This is further reinforced by the observation that growth is less in lower status fish or in larger groups.