11-17-2010, 12:51 PM
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A 55g is a nice tank for a shoal of angelfish. In fact, it is the minimujm sized tank for these fish which as mentioned should be in a group of 5-6 (or more in larger tanks). Corys are fine with them, as are BN pleco. I agree, only one BN as they consume algae and if the tank is balanced there will not be sufficient to justify more than one BN. A group of corys from minimum 5 to 20 if you like will fit in nicely. If you want more than one species of cory, 5 is a good number for each species, though in a pinch 3 of each will work; they are very social fish and most species like some of their own around them.
Be careful of those so-called stocking guides. There are many facets to having "community" fish, from water parameters, environment, filter currents to lighting; selecting fish that share the same requirements in all these areas is essential.
Have a look at the info in our fish profiles, second tab from the left in the blue bar at the top, or click on the shaded name of a fish in posts to see that profile, example Pterophyllum scalare for the common angelfish.