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Lamarck's Angelfish (Genicanthus lamarck)

Find Lamarck's Angelfish across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified fish listings before you buy.

Lamarck's Angelfish
Photo: Diego Delso · CC BY-SA 4.0
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Where to buy Lamarck's Angelfish

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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  • Amazon

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  • Petco

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About Lamarck's Angelfish

Lamarck's Angelfish displays striking yellow coloration on the head and upper body, transitioning to blue-gray on the lower body and tail. The dorsal and anal fins are bright yellow with blue edges, and the pectoral fins are translucent to pale yellow. Sexually dimorphic adults show subtle differences in patterning.

Key facts

Care Level
Hard
Feeding Schedule
2-3 times daily
Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.023-1.025
Family
Pomacanthidae
Difficulty Level
Lamarck's Angelfish is a challenging species requiring excellent water quality, stable conditions, and a well-established aquarium. Success depends on consistent feeding of varied foods and avoiding aggressive tank mates, making it best suited to experienced hobbyists.
Care Requirements
• Minimum 120 gallon tank • Maintain temperature 72–78 °F and salinity 1.023–1.025 • Provide excellent water flow and pristine water quality (pH 8.1–8.3) • Feed 2–3 times daily with varied diet: quality flakes, mysis, spirulina, and vegetables • House singly or in bonded pairs; avoid mixing with aggressive or similarly-shaped fish • Monitor for ich, bacterial infection, and loss of appetite in quarantine before introduction
Min tank size
120 gallons
Temperament
Semi Aggressive
Appearance
Lamarck's Angelfish displays striking yellow coloration on the head and upper body, transitioning to blue-gray on the lower body and tail. The dorsal and anal fins are bright yellow with blue edges, and the pectoral fins are translucent to pale yellow. Sexually dimorphic adults show subtle differences in patterning.
Reef safety
Reef Safe with Caution
Diet
omnivore
Max Size
10

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell fish directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current fish listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible fish listings — so you can see the conditions a fish was raised in before you buy. Log this fish on Reef Trak.

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