Mangrove Rivulus (Rivulus marmoratus)
Mangrove Rivulus: Photo credit Florida Marine Entomolgy
Key Information
The mangrove rivulus was identified as a Candidate Species on July 14, 1997 (62 FR 37560) and transferred to the Species of Concern list on April 15, 2004 (69 FR 19975).
Brief Species Description
The mangrove rivulus is a small mangrove forest species. It has a long, slender, dorsally flattened body and a rounded caudal fin. It is dark brown to green in color, often mottled with small black dots and, at times, a small amount of orange coloration on the body and fins. The maximum length if 2.4 in (6.1 cm), and average size is approximately 1 in (2.54 cm). The mangrove rivulus is a self-fertilizing hermaphrodite (e.g. both its eggs and sperm are produced by a single parent, with offspring that are genetically identical to that parent). They have been collected within microhabitats with mangal, which is a forest of mangrove trees, including crab burrows, stagnant pools, sloughs or ditches (which are often intermittently dry), and some fossorial (burrow) niches inside logs or under log debris, leaf litter, etc. For more information, please see the species fact sheet below.
Status Review
A formal status review was conducted in 1999.
Area of Concern / SOC Range
Western Atlantic: Florida
Mangrove Rivulus SOC Range Map
Species Fact Sheet
Supplemental Information
Florida Museum of Natural History -Ichthyology
FishBase.org
Conservation Designations
