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ORA Super Specials
Mono Argentus
(Monodactylus argenteus)
Mono Argentus
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
Additional locales and sizes may be available!

Quick Stats

Care Level Moderate
Temperament Semi-aggressive
Color Form White
Diet Omnivore
Water Conditions 75-82° F, KH 8-12, pH 7.2-8.4
Max. Size 10"
Origin Thailand
Family Monodactylidae
Minimum Tank Size 125 gallons
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The Mono Argentus, also known as a Mono or Fingerfish, comes from the coastal and inland waters of Africa and Asia. The Mono Argentus is a diamond-shaped, silver in color, and has two black stripes on the front half of the fish. The dorsal fin has a yellow tint with a black outline.

The Mono Argentus grows very large and requires an aquarium of at least 50 gallons. The smaller specimens can be kept in freshwater, but as they grow and mature, the water should gradually be converted to a higher salinity. A substrate consisting of aragonite sand or gravel is preferred. Provide plants and rocks that thrive in brackish water.

The Mono Argentus spawns in the saltwater of the ocean, but the difference between the sexes and their breeding habits are unknown. Gradual change from brackish to saltwater will maximize the coloration and health of the fish as they become older.

In the wild, the Mono eats large amounts of vegetable matter. Provide them with dried seaweed, lettuce, brine shrimp, and a quality flake food.

Approximate Purchase Size: Small: 3/4" to 1-1/2"

Customer Testimonials

Kevin M Spring , TX

This is one of my personal favorites! The Mono Argentus is a wonderful fish for intermediate to advanced aquarists.
Joe Browne Chicago , IL
Very hardy,very hungry they grow big fast. Keep them in groups they will school together, it's nice to watch. I keep them in a marine reef tank they are doing perfect. For full salt some acclimation must be done.They get along with my tangs and never nip the corals.
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