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French Butterflyfish (Prognathodes guyanensis)

Find French Butterflyfish across reef-livestock retailers on ReefDock. Compare sources, check known pricing where available, and review care information before you buy.

French Butterflyfish
Photo: (c) Robertson & Baldwin D. & C., some rights reserved (CC BY-NC-SA) · cc-by-nc-sa
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Where to buy French Butterflyfish

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

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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  • Petco

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About French Butterflyfish

Yellow body with vertical orange-red stripes, black vertical bands on the dorsal and anal fins, and a distinctive black band through the eye. Moderately compressed body typical of butterflyfish.

Key facts

Feeding Schedule
2-3 times daily
Max Size
5.5
Care Requirements
• Minimum 70-gallon tank for adult; prefers 100+ gallons • pH 8.1–8.3, SG 1.020–1.025, temp 72–78°F • Live rock with plenty of hiding spaces and shadowed areas • Varied diet: mysis shrimp, small crustaceans, quality flake/pellet foods • May nip at stony corals and clams; monitor behavior closely
Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Diet
omnivore
Difficulty Level
Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.
Min tank size
70 gallons
Family
Chaetodontidae
Care Level
Moderate
Reef safety
Reef Safe with Caution
Diet Details
Feed a varied diet of small frozen foods including mysis shrimp, enriched brine shrimp, and high-quality flake foods. Supplement with occasional live copepods and offer small frozen sponge preparations. Feed 2–3 times daily in smaller portions.
Origin
Western Atlantic from Guyana and Venezuela to the Caribbean, primarily found on deep reef slopes and drop-offs.

Research before you buy

ReefDock is the sister app to Reef Trak. Use Reef Trak to research and log fish, keep tank parameters organized, and maintain a complete livestock history. Log this fish on Reef Trak.

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