A Lake Trout Lake

Chandos is a Lake Trout lake

(description and picture following Cornell.edu)
Lake trout, along with brook trout, belong to the “char” sub-group of salmonine fishes that is distinct from the “true” trout and salmon. Lake trout inhabit deep, cold lakes, and are strongly influenced by annual temperature events within a lake. During winter, when most lake waters are a uniform 0 – 2° C, lake trout can range throughout a lake and prey upon small fish and bottom insects. In late April or early May, lake trout feed actively upon minnows, crayfish, and abundant insect larvae that are active at that time of year in shallow areas. When warm surface water becomes established during June in nearshore areas, lake trout are forced into deep, cold waters far below the surface where prey is relatively sparse. As summer temperatures cool off in September, the warm upper lake cools off and lake trout once again hunt regularly in more productive surface waters.

Lake trout spawn at night on rocky shoals in the fall, usually during late October or early November. Fertilized eggs settle within rocky crevices where they remain until hatching about four to six months later in late February to April.

Is Chandos an officially designated Lake Trout lake?

A few years back there were questions about whether or not Chandos was officially designated as a trout lake. This report from 2009 discusses some of the area lakes in terms of the quality of their habitat for trout…mnr-l-trout-strategy-for-2009

This report from 2015 indicates that Chandos is  indeed designated as a Trout Lake.   Quoting from the OMNRF report on inland Ontario Lakes Designated for Trout Management in 2015:

“Lake Trout lakes are rare. Only about one percent of Ontario’s lakes contain Lake Trout, but this represents 20-25% of all Lake Trout lakes in the world.  The province, therefore, has a great responsibility to manage them wisely.  OMNRF efforts to develop a coordinated strategy to protect Lake Trout populations in Ontario requires a comprehensive list of lakes currently designated for Lake Trout management.  
The Lake Trout is the only major, indigenous sport fish species in Ontario that is adapted to oligotrophic lakes (i.e. lakes with low levels of nutrients, high dissolved oxygen levels, and typically deep areas with very cold water).  Its slow growth, late maturity, low reproductive potential and slow replacement rate make it susceptible to a variety of stresses.  It is an important component of Ontario’s rich biodiversity, because of the unique character of the species and the unique gene pools of many of its individual stocks.  Because the Lake Trout is a sensitive species that is adapted to a narrow range of environmental conditions, it is an excellent indicator of the health of fragile aquatic ecosystems.”

There are 2 types of trout lakes:  “natural” and “stocked”.  Chandos Lake is designated as a Natural Trout Lake.  (Other area lakes similarly designated are Anstruther, Paudash, Tallan, Wollaston, and the Sharpe’s Bay basin of Jack Lake.)
Of these lakes, Chandos, Jack,  Tallan, and Anstruther are designated as fish sanctuaries, and thus ice fishing is not allowed. 
See:  (http://files.ontario.ca/environment-and-energy/fishing/mnr_e001334.pdf)

From the above report it is noted that Chandos Lake is a fish sanctuary: