FISHES 
Porcitupaz. (The Killifishes.) 
33. Killifish. Fresh-water Killy. Fundulus diaph- 
anus (Lesueur).—Abundant in bays and shallow 
inlets near the lake; usually found quite close to the 
shore line, associated in small shoals. A fairly good 
bait fish, though not as attractive as the bright 
shiners and chub. This species attains a length of 
about four inches. 
ORDER HEMIBRANCHII. (The Half-gills.) 
GastERostEmar. (The Sticklebacks.) 
34. Brook Stickleback. Hucalia inconstans (Kirt- 
land).—Common in small streams and ponds, where 
it secretes itself among water plants, ready at any 
moment to attack any small fish which approaches 
its lair, or to dart upon passing insects small enough 
to become its prey. This species is a nest-builder 
and is particularly vigorous in the defence of its 
eggs or young. It grows to a length of two and a 
half inches. 
35. Ten-spined Stickleback. Pygosteus pungitius 
(Linnaeus).—Found in Toronto Bay and Ash- 
bridge’s Bay. Not abundant. 
36. Two-spined Stickleback. Gasterosteus bispin- 
osus (Walbaum).—In the breeding season the male 
is brilliant bluish or greenish above, with indistinct 
dark bars, and generally bright red below. Length 
in our waters about three inches. Rather common 
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