Tesselated Darter Etheostoma olmstedi
Species overview: The tesselated darter can be found from southern Canada’s St. Lawrence River drainage to Georgia. In Pennsylvania, it is found in the Delaware, Potomac and Susquehanna River watersheds. The tesselated darter greatly resembles the johnny darter, and it was formerly considered a subspecies of the johnny darter.
Identification: “Tesselated” refers to the fish’s having a mosaic-like or checkered pattern. The tesselated darter’s coloration is pale-sandy, fading to white on the bottom. The back and upper sides of the tesselated darter have nine to 11 pronounced, small X-shaped or W-shaped marks. This species, like the johnny darter, has a single anal fin spine. Other darters in Pennsylvania have two anal fin spines. The mouth is positioned low and is horizontal. The mouth ends below the front of the eye.
[FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular]Tesselated darter breeding adults develop 12 or 13 vertical bars on the sides, while losing the X-shaped and W-shaped markings. The upper side scales become wholly outlined in a dark color. The fin membranes, except those of the pectoral fins, grow dark with lighter tips on the pelvic and pectoral fins. In this phase, tesselated darters are sometimes mistaken for small yellow perch. Tesselated darters reach a length of about 3 1/2 inches.[/FONT]
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Habitat: The tesselated darter prefers the quieter portions of sandy or mud-bottomed flowing water or still water, except in the breeding season.[/FONT]
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Life history: Tesselated darters spawn in the spring, around May or June. The female deposits adhesive eggs on the tops and sides of rocks. The female quivers as she drops her eggs, and the male fertilizes the eggs as he swims slowly over them. After spawning, the female leaves the nest. The male remains to guard the eggs. The male aerates the eggs either by swimming upside down, finning them with his pectoral fins, or by holding his position with the pectoral fins and fanning with his tail. The eggs incubate at around 65 degrees and hatch in about three weeks.[/FONT]
[FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular]Tesselated darters feed mostly on small insects and crustaceans at first. As the fish grow, they consume bigger insects.[/FONT]
http://www.fish.state.pa.us/pafish/fishhtms/chap23.htm
fantail is not listed!! explain that one smarty pants!!! by the way im in the potomac watershed