Lamarck’s Angelfish (Freckletail Lyretail Angelfish)
The Lamarck’s Angelfish, also known as the Freckletail Lyretail Angelfish, is uniquely sexually dimorphic among angelfish species. Both males and females have a silvery-gray body with horizontal black stripes running from the eye to the caudal fin. In females, the stripes are bolder and one extends fully across the caudal fin. The long dorsal fin is black, larger in females, and the caudal fin is marked with black freckles.
This species is relatively easy to keep compared to other angelfish and requires a well-maintained tank of at least 125 gallons. They may chase small, docile planktivores such as Anthias, Fairy Wrasses, Flasher Wrasses, and Fire Gobies, but generally do not attack other fish, including other angelfish. Only one male should be kept in a community to avoid aggression.
| Key Features | Description |
|---|---|
| Sexual Dimorphism | Yes – females have bolder stripes extending to the caudal fin |
| Fin Coloration | Dorsal fin black; caudal fin with black freckles |
| Tank Size | Minimum 125 gallons |
| Compatibility | Generally peaceful; may chase small planktivores |
FAQ
What is the difference between male and female Lamarck’s Angelfish?
Females have bolder black stripes that extend fully across the caudal fin, while males have less intense stripes that end before the tail. The dorsal fin is also larger in females and uniformly black in both sexes.
What kind of tank size is required for this fish?
A minimum tank size of 125 gallons is recommended to ensure proper space and water stability.
Will Lamarck’s Angelfish attack other angelfish?
They generally do not attack other angelfish, but may chase small, docile planktivores such as Anthias or Fairy Wrasses.
Carol Lee –
Easy to maintain and very active in a 125-gallon tank. The fish are peaceful with other species and show clear gender differences. The black freckles on the tail are quite striking and add visual interest to the display.
Trevor Smith –
We kept one male and one female, and the female’s bold stripes stood out. They adapted well to the tank and didn’t show aggression toward other fish. Only a bit of chasing of small wrasses, but manageable.
Carolyn Cameron –
The fish are beautiful and show clear sexual dimorphism. The tank water parameters stayed stable, and they seem content with regular feeding. A great choice for a moderately sized angelfish community.