Behaviour Active, peaceful, shoaling
Typical size 20cm
Max size 25cm
Tank Area All
Min Tank Size 150cm
Min Number 4
Temp Min: 24℃ Max: 28℃
Feeding Flake, frozen, live, vegetable foods
pH Range 7.5-8.5
Hardness m,h,vh
Mono Monodactylus argenteus
  • Mono Monodactylus argenteus - thumbnail


Monodactylus argenteus

The Mono is a relatively peaceful shoaling fish that will mix well with other large, robust fishes. Brackish water is essential and Mono's should not be kept in purely freshwater, except when young. Keep in shoals of at least four; in small numbers bullying can occur. A large tank is required to keep these fish with plenty of open swimming space and a few hiding spots, ideally amongst large roots. The stripes are only present on young fish and will disappear with age. A number of closely related species of mono are available.

Monos will need to be transitioned into full saltwater as they mature.

This fish is excluded from the Compatibility Checker as it is unsuitable for community aquariums or may require expert care.

Family Monodactylidae (Fingerfishes) | Synonyms Acanthopodus argenteus, Chaetodon argenteus, Monodactylus rhombeus, Psettus argenteus, P. rhombeus | Other names Fingerfish, Finger Fish, Silver Moony, Diamond Moonfish, Moon Fish, Diamondfish, Diamond Fish, Kitefish, Kite Fish, Silver Mono, Sea Kite, Sea Angel, Silver Batfish, Singapore Angelfish | Origin Africa, Asia, and Indonesia | Natural Water Conditions pH 7.5-8.5, brackish | Natural Habitat Brackish and freshwater areas, rivers, tidal zones, estuaries, mangroves, saltwater

Have a Mono Problem or General Question?

If you have a question about keeping Mono's then please use our Mono help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them.

Think Fish Community Creator - Mono

Please check your water type for compatibility with your fish, which can be found on the Mono information box.

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