20 MARINE AND FISHERIES 



5 GEORGE v., A. 1915 

 Genus Abramis. 



Abramis crysoleucas, Mitchill. 



(Golden shiner. Bream) 



(Plate II, Fig. 6) 



Abundant, but confined to the ends of swamps and inland lakes, apparently 

 preferring the smaller ponds where the water is dark, choked with vegetation or 

 almost filled with bottom ooze. Nothwithstanding its unattractive habitat 

 the fish is one of the most striking of all the minnows, and is easily recognized 

 by its deep flat body, which is of a bright golden coloration, and by the very oblique 

 mouth. 



Length of the larger specimens 3 J inches. Body thin, the depth 3 '5 to 4-5, 

 relatively greater in the larger specimens. Abdomen compressed behind the 

 ventrals into a sharp edge. Coloration dark olivaceous above. Sides bright 

 silvery with golden reflections. A dark lateral band, conspicuous only in small 

 specimens. Head compressed, 3*9 to 4-3. Mouth terminal, very oblique. Eye 

 3'1 to 3-4 in head. Dorsal fin inserted behind ventrals, with 8 rays. Anal fin 

 long, with 12 (sometimes 11) rays. Scales 10 or 11, 44 to 55, 3 to 5 (usually 4). 

 Lateral line strongly decurved, sometimes broken or irregularly connected. Usually 

 complete, but in some specimens, with pores only on a few anterior scales. Intes- 

 tine as long or longer than the body, 1 to 1 -3. The intestine commonly contains 

 clean masses of green algae. 



Genus Rhinichthys. 



Two species representing this genus are known to occur in Ontario waters, 

 namely, the black-nosed dace {R. atronasus) and the long-nosed dace {R. cataractce). 

 Both species are reported by Meek and Clark ('02) from Hawkstone, Lake Simcoe, 

 and from Sault Ste. Marie (R. atronasus being more common), but not from 

 Muskoka Lake. 



In the Georgian Bay collections there is one specimen of R. atronasus the 

 presence of which may be accidental. R. cataractce occurs in limited situations as 

 described below. 



Rhinichthys cataractae, Cuvier et Valenciennes. 



(Long-nosed dace) , 



(Plate II, Fig. 7) 



The species inhabits and appears to be confined to rock-pools on exposed 

 reefs fringing the main shore of Georgian Bay. It is practically the only fish 



