First I will lay out the legal components of this question. Under the Fishery Regulations pursuant to the Fisheries Act (Saskatchewan) Section 45 lays out the information for this question. Prohibitions re live fish 45(1) Subject to subsection (2), no person shall obtain, transport, raise or possess any live fish of any species without an aquaculture licence. (2) Subject to the Act, these regulations or any other regulations made pursuant to the Act, any person other than a commercial aquaculturist, without an aquaculture licence, may obtain, transport, raise or possess, within Saskatchewan, live fish of any species set out in Table 4 obtained from a commercial aquaculturist if that person holds those fish in contained waters that are under the control of that person. (3) For the purposes of this section, �contained waters� means: (a) a tank, raceway or other container, whether inside or outside a building; (b) a dugout, artificial pond, natural pond or lake that is screened at the inlet and outlet to prevent the escape of fish; or (c) a body of water that does not flow directly or indirectly into another body of water or a watercourse. 7 Apr 95 cF-16.1 Reg 1 s45; 27 Dec 96 SR 102/ TABLE 4 [Subsection 45(2) and section 49] Fish that may be cultured without a licence in Contained Waters Common Name Species Name Rainbow trout Oncorhyncus mykiss Cutthroat trout Salmo clarki Atlantic salmon Salmo salar Brown trout Salmo trutta Brook (Speckled trout) Salvelinus fontinalis Arctic char Salvelinus alpinus and hybrids of the above species. 7 Apr 95, c.F-16.1 Reg 1 Table 7; 27 Dec 96 SR 102/96 s15. So what this means, is that if your inlaws dugout is a contained water and the trout have no way of getting out then your dugout is good for stocking. Now you just need to make sure you stock it with fish listed under table 4. As for where to get these trout another topic has some of the info Keets Fish Farm Collin Keets RR #2 Saskatoon 37K 3J5 cell 290-3026; 668-4535 McNabb Trout Hatchery Glen McNabb RR #5 Saskatoon S7K 3J8 934-6557 Here is there websites http://thetrouthatchery.com/ http://keetsfishfarm.com/ These two aquacultures provide atlantic salmon, rainbow and brook trout. If you want more from the Table 4 list you can always go to the govenment ran fish hatchery in Fort Qu'appelle. My uncle has bought trout from there for his dugout and at the site you should be able to get just about everything on that list. That covers the legal aspect and where to get the trout from. As for the habitat it depends on the dugout. Some dugouts have the riparian and aquatic vegitation needed to sustain a small fish population, and some don't. Also with trout the water quality needs to be up there as they are picky. Another issue is there might be too much vegitation or not enough oxygen in the water. There are two ways to deal with this the short term quick fix or the long term solution. The quick fixes which is the majority that are used are using Copper sulfate (blue stone) to kill the plant life. This gets rid of all aquatic plant life but decomposing vegitation uses oxygen which reduces it for your fish. To counter this windmills are used this pumps more oxygen into the water but also helps with growing vegitation again in the long run. Hope that helps.