What I really like about my loach tank is the contrast of motion and the bursts of activity. The weather loaches are like a poor man's arowana, slipping through the water like a silk scarf. The Yoyos are kind of like a cartoon fight, just a cloud of dust with fins and barbels hanging out. The sand loach is like a fat old curmudgeon belly bumping kids off his lawn, and the angelicusses (angelici?) are just pretty. Top that off with the red eyes, who move like one would expect a fish to move, and it's a regular dance troop at feeding time.
The really neat thing is the tetras are almost always out front and center, and the weather loaches will move in and out of the thick plantings in back unpredictably, but the sand loach always hangs out in the left center flower pot under a javamoss slate, so he's always there like a guard dog in his kennel, but the rest of them stay out of sight under the flower pots and slates until there's food, and then they all come bursting out.