CHAPTER IV 

 THE TROUT 



Distribution — only one British species — differences from 

 Salmon — migratory and non-migratory habit not permanent. 

 Sea-trout : eastern and western races — food, migrations, etc. — 

 spawning — fry — smolts — rate of growth— local names. Estua- 

 rine Trout. Freshwater Trout : variability — size — Great Lake 

 Trout — Lochleven Trout — variation in colour dependent on 

 environment — Trout in Monaghan — in Inverness-shire — in the 

 Smoo — in Crassapuil — Parr-marked Trout — gillaroo — Trout of 

 Lough Neagh — Gillaroo of Lough Melvin and Loch Mulach 

 Corrie — malformed Trout in Yorkshire — tailless Trout of 

 Islay — Hump-backed Trout — food and habits of freshwater 

 Trout — Rainbow Trout 



WE have already seen that although the 

 Salmon is normally a migratory fish in our 

 waters, yet non-migratory forms are included in the 

 same species. This is also the case with the Trout 

 {Salmo trutta), which has a somewhat different dis- 

 tribution from the Salmon, as it is not found in North 

 America, and ranges from Iceland and the northern 

 coasts of Europe southwards to the countries to the 

 north of the Mediterranean and even to Corsica, 

 Sardinia, and Algeria, although in these regions no 

 Sea-trout occur. Eastward the Trout extends 

 through Persia to the northern slopes of the 

 Himalayas, whilst migratory Trout inhabit the 

 Black, Caspian, and Aral Seas and their tributaries. 



