The flagtail (Semaprochilodus insignis) is a freshwater fish known for its striking striped tail and shimmering silver body. Commonly found in South America, this species is admired for its peaceful demeanor when kept in groups and adaptability to aquarium environments.
Scientific Name
Semaprochilodus insignis
Habitat
South American rivers and streams
Conservation
Not listed as endangered; commonly kept in aquariums.
Lifespan
Typically up to 8–10 years in captivity.
Fun Fact
Flagtail characins can be aggressive toward their kind unless kept in larger groups.
Diet
Omnivorous; prefers plant matter such as algae wafers and spirulina, along with quality sinking dried foods and frozen options
Average Size
Can grow up to 25 cm (10 inches) in length.
Location / Placement info
Displayed in the Coastal Reef Exhibit, near the Ocean-View Tunnel
FAQ
What is the average lifespan of a Flagtail fish?
Flagtail fish typically live 8–10 years with proper care in captivity.
How big can a Flagtail get in an aquarium?
Flagtail can grow up to 12–15 inches (30–38 cm) in length.
What does a Flagtail fish eat?
Flagtail fish are omnivorous, preferring algae wafers, spirulina, vegetables, and some high-quality sinking pellets.
Can Flagtail fish be aggressive?
Flagtail fish may be territorial and aggressive when kept alone or in small groups, but are peaceful in schools of 6 or more.
Are Flagtail fish good for community tanks?
Yes, Flagtail fish can be kept with other medium to large peaceful species, including catfish and South American cichlids.
How can you tell the difference between male and female Flagtail fish?
Female Flagtails are generally plumper than males, but there are no clear external differences.
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