All new reefkeepers inevitably want the same thing - easy to keep corals that will add colour and movement to their tanks. Here's a list of beginner-friendly LPS corals.
Catfish are an amazingly diverse group, named of course after their cat-like whiskers. They range in size from just a couple of cm to three metres in length.
If you find a dead fish in the pond the first thing to check for is oxygen, which you do visually. Then, check your equipment, and of course, test your water.