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Freshwater fishMono Argentus
Mono Argentus
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Mono argentus can be slowly transitioned to entirely salt water but will always need some salt in the water in a primarily freshwater fish tank. The argentus earns its name for the gold fringe (argentus is Latin for gold) around the fins. These are great schooling fish that do well with other fish and will eat prepared foods such as flake.
Quick Facts
| Scientific Name | Monodactylus argenteus |
| Origin | Indo-Pacific |
| Care Level | Moderate |
| Temperament | Peaceful |
| Adult Size | Up to 8–10" |
| Lifespan | 10 years |
| Diet | Omnivore |
| Water Temperature | 75–82°F |
| pH | 7.5–8.5 |
| Group Size | Does best in a group |
| Shipping Size | Approx. 2" |
Care Guide
Tank setup: Monos are fast, active swimmers that do best in brackish or full saltwater as adults. Give them open swimming space and strong filtration.
Feeding: Feed a quality flake or pellet once or twice a day. They also enjoy frozen foods like brine shrimp.
Tankmates: Monos are peaceful with fish their size and do best with other brackish fish like scats and archerfish.
Good to know: Monos have a bright silver body with yellow fins and swim together in a tight group.
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