

'• 





Fig. 240. Mollienisia species (Life size) 



These fishes well illustrate the pronounced color differences shown between the sexes 

 of some species. To the uninitiated the difference is sometimes so great that a pair would 

 not be recognized as belonging to the same family. See page 242 (No. 18). 



Fig. 241. Belonesox belizanus or Viviparous Killifish (Slightly reduced) 



These little fishes are quite as bloodthirsty as their expression would appear to indi- 

 cate. After they attain adult size they prefer being fed on small living fish, although 

 worms are taken under protest. See page 242 (No. 18). 



258 



