When I was lucky enough to travel about, one of the important things in my kit was a fishing box. This was (and is still) an Old Holbourn tin with line, split shot, various small hooks and a couple of little floats.
I have caught small fish in surprising places. I only ever fish to eat, so can't ever consider myself an expert fisherman! Some fish are good to eat and others I would rather forget.
One piece of advice that I would give is to have a couple of larger hooks stashed along with matching line. This doesn't need to be a long length, just enough to flick three or four metres from your fishing position. This will enable you to catch the larger fish that ends up nosing around those bits and pieces floating in the water after gutting the smaller ones that you catch.
If you are with friends you will then have a real feast........ Happy fishing!
Swyn.
PS. I forgot to say that usually the bait was a little bit of raw bacon.