NOTE Tucker and Alshuth: Development of laboratory-reared Archosargus probatocephalus 
401 
spines 3, anal rays 10-11 (9-11), pectoral rays 15- 
17, pelvic spine 1, pelvic rays 5 (Miller and Jorgenson, 
1973; Johnson, 1978). Caribbean sea bream usually 
have 13 dorsal spines, whereas sheepshead, pinfish, 
and most other sparids usually have 12. Diplodus 
spp. have slightly higher counts than most sparids: 
11-13 dorsal spines, 13-16 dorsal rays, and 13-15 anal 
rays. Pagrus species have fewer anal rays, usually 8. 
Stage of development at a given size could be use- 
ful for distinguishing larvae. At the same stage, scup 
tended to be much longer than sheepshead (Fig. 4) 
and Caribbean sea bream. Kuntz and Radcliffe’s 
(1917) 25- mm TL scup (their Fig. 36) corresponds 
with Houde and Potthoff’s (1976) 12.8-mm TL sea 
bream (their Fig. 5a) and our 8.9-mm TL sheepshead 
(Fig. 3D). 
The proportions snout length:BL (3-8%), eye 
diameter:BL (7-14%), predorsal length:BL, snout to 
first dorsal ray:BL, snout to pelvic spine:BL, preanus 
length:BL, and body depth at anus:BL (Table 2) all 
were similar during development of sheepshead and 
Caribbean sea bream (Houde and Potthoff, 1976). Eye 
diameter and body depth are relatively small in scup 
at 10 mm TL. At that size, eye diameterrHL was about 
32% in scup, 37% in sea bream, and 39% in sheeps- 
head; depth at pelvic fin:SL was 27% in scup, 34% in 
sea bream, and 37% in sheepshead. 
Acknowledgments 
We thank Chuck Sultzman for helping to catch the 
broodfish, Mary Clark and Bob Eifert for maintain- 
ing cultures of algae and zooplankton, and Blake 
Faulkner for assistance in raising the larvae. 
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