Sardinemaxxing
I'm basically in poverty right now, and I've found that sardines are simply the single best protein source. They're incredibly cheap, they have 22-23grams of protein in a can for roughly 150 calories, and they have FAR lower concentrations of mercury than tuna and many other fish since they're near the bottom of the food chain. If you eat them you gain the strength and agility of a housecat by eating what it would eat, and I can even put them in a small plastic baggie so that it looks like I'm eating fishing bait.
Anyway, why don't more people recommend sardines? They're incredible and they form the bulk of my daily protein intake, partly because of money and partly because i'm semi-pescetarian.