Brown and rainbow trout differ markedly in their coloration. More subtle differences include the size of their pectoral fins. Brown trout (top), which are adapted to flowing water, have larger pectoral fins which they use to keep them near the river bottom, where the current is slower. Rainbow trout (bottom) are predominantly lake fish that run upriver to spawn. Their pectoral fins are smaller: adapted to living in a lake environment, they do not need to use their pectoral fins to hug the riverbed.
Te whakamahi i tēnei tūemi
Photographs by Carl Walrond
This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.