ok,at my lfs i found a dinosaur bichir for 9 dollars. i read like a dozen articles all of which said a 55 minimum. think i can get one? i have some black skirt tetras(there jerks. they try to kill things with long fins. they can be eaten.) 4 jewels(they should be okay,there getting pretty big) a rafael catfish(he just hides,wont be a problem) and my shark(again,getting big. should be safe).