Nicholsina usta (Valenciennes, 1840)
Emerald parrotfish
photo by Cox, C.

 Family:  Scaridae (Parrotfishes), subfamily: Sparisomatinae
 Max. size:  30 cm TL (male/unsexed)
 Environment:  reef-associated; depth range 1 - 73 m
 Distribution:  Western Atlantic: New Jersey, USA and northern Gulf of Mexico to Brazil. Absent in Bermuda, Bahamas and West Indies (except Greater Antilles).
 Diagnosis:  Dorsal spines (total): 9-9; Dorsal soft rays (total): 10-10; Anal spines: 2-2; Anal soft rays: 9-9. Body somewhat elongate, the depth contained 3 to 3.2 times in SL. Snout somewhat pointed; a small dermal cirrus at edge of anterior nostril; teeth fused only basally, thus not fully coalesced to form dental plates. Gill rakers 12 or 13. Caudal fin slightly rounded; pectoral fin-rays 13. Median predorsal scales 4 or 5; 1 row of scales on cheek. Colour: mottled olive green on back, the scales of sides with bluish white centres and reddish edges; head below level of mouth yellow; 2 diagonal narrow red-orange bands on cheek; median fins reddish, dorsal fin with a black blotch at front.
 Biology:  Inhabits seagrass beds and open bottom, mostly in shallow water. Larger adults live in deeper water. Not commonly marketed for food (Ref. 52834).
 IUCN Red List Status:   (Ref. 96402)
 Threat to humans:  harmless
 Country info:   

 Entered by: Luna, Susan M. - 17.10.90
 Modified by: Capuli, Estelita Emily - 15.10.15
 Checked by: Torres, Armi G. - 25.08.94

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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