The Brown rivulus (Rivulus cylindraceus) is a freshwater fish of the family Rivulidae that grows up to 6 cm.
Description
The Cuban rivulus is a small killifish endemic to coastal rivers of Cuba. The species grows to about 5.5 cm and has a cylindrical body with an upturned mouth and a far rearward-set dorsal fin, characteristic of the rivulines. It lives in clear headwaters with vegetation and can crawl over land for short periods to reach new pools. Unlike many relatives this is not a seasonal killifish. The fish is popular in the aquarium trade and is assessed as Least Concern (LC) by the IUCN.
Frequently asked questions
How do you recognise the Brown rivulus?
The Brown rivulus has an elongate, eel-like body, is mainly brown and shows a plain pattern.
Where does the Brown rivulus live?
The Brown rivulus lives in fresh water and is mostly found around mixed bottom.
How big does the Brown rivulus get?
The Brown rivulus grows to a maximum of about 6 cm.
Is the Brown rivulus dangerous to humans?
No, the Brown rivulus is harmless to humans.
Is the Brown rivulus edible?
The Brown rivulus is not usually eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Rivulus
More from the family Rivulidae
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