depend who you talk to. Lets se ahah 100 trout at 2 to 5 pouns 3+8-pies+apples-shrimp= 300 or 100 trout at an average of less than a pound 70 pounds.

Let's say one bag of ice. I'll go with 30 pounds total.

about 100 lbs

Fish only, 75 pounds

If you go buy shrimp. You can get 40 lbs of shrimp iced down adequatly and top off a 48 quart ice chest. Shrimp are heavier than fish. The shrimpers use a brine tank to separate shrimp from fish. The Shrimp sink and the fish float in the salt bath.

Probably 35-38 lbs to totally fill up 48 quart ice chest properly iced.

I had a commerical lic. and the best you can do is about 48 pounds of fish in a 48q and that is on the high end. Reason I ask the question you see guys with 2 chest and they say they have 50 trout in the chests that average 3 pounds der not so. Like someone posted just purchase some shrimp and this will surprise you.

I have been in this scenario before. One limit of trout averaging 2.5 to 3lbs each, with a few over 5lbs will never fit in a 48quart or a 50quart. you will be lucky to get 17 fish in that thing. i had to hike a levee back with a rolling cooler with 10 fish dragging in the landing net that couldnt fit in the cooler.