103 



/IriMiv niinno * 



Brassy minnow 



H yboji^'nat hus hank inson t (llubhr;) 



^reneral de sc rip t ton , — Small miruiow willi l.ir|W-, 

 easily removed ncMler.; ncnles not nmivll ainl iii'w.icil 

 behind head; brar-.sy lUieeii on aides of body; snout lilmit. 

 and rounded, mouth small; fin;-, nhori, roiind'-.l .'M t. Lp, 

 and free pd^5os; lliiin^J of" body r^avliy black, i n I t- ■, 1, 1 ne 

 (coilcti like wat,('h iij) i- i iij.^ ) moi-f.> than t,wlcf« as hwif) as 

 body. 



One o {' t.lir iTio';t. I'ommon and w i dfr.prcad im i b Ci.h'-. 

 of the (jreat Laker. i'(»|.^ion, i-ain-^in^.^ rfmii Muntana to the 

 headwaters of the Hudson iiivct- in New Yofk, and ■amtli 

 in the western States to Kanr-a;.. Tlii:; mltuiow is el'tfn 

 foun(i in small creeks, comm(Hily in b m': • i I'.nii , .mil 

 somet i m«';; i n 1 akes. 



Little in known o 1' it:; s.pawn i ;i).^ Ii.ibits, but adhe- 

 sive e^^^>:'. pi-obably are scattered ovri- bottom s.aiid, mud, 

 o I- .lehi I "ar'ly in the spring when walr-r- tfm|ie im tu i -■• 



V'- 1 i-h :.i i' ' lo 5fj° F, Jrowth la slow and iiiatui'i ty |ir'iS.i 

 bly i ■; r-eadifd at the age Of 2 yeai-s, with a |cn^';th o I' 

 2k t,o .'3 inches. Lat>W'r s.pec i men' m .\ y \.< i ii -mI i ti 

 fertilized ponds. 



The fcjodof t,h(> bisass.y minnow is. v.ii i- 1. A saimmat-y 

 of food s. t nd 1 rr. made by two wo rke r •• i n i i i ! 



followin^l percentages: animal plankton, ; s. ^ 



plankton, 31.6; aquatic insects, iJl.3; plants, 3.'!; 

 .surface drift, 16.1; and silt, 1.7. 







^^dorsal fin thickened no tha t it s.tan.l:. out; mouth 



terminal, and upturned; scales small and crowded behind 

 the head; back rounded and arched ; i it't.il line only on 

 anterior- half of body; breeding n. ■ ! . with black head; 



Fat-hcadcd minnow 



/' r mr/'/;fi / r V /> , f>i otnr I us (Ra fines que) 



r the 

 mall, 



