Originally Posted by snorvich

Dragonets

Colorful, slow-moving Dragonets are some of the most interesting fish for the marine aquarium. Included in this group are mandarin fish, scooter blennies (which of course are not blennies at all), and other more esoteric dragonets such as fingered dragonets.

Dragonets have special feeding requirements because they have a very high metabolism and are grazers requiring nearly constant supply of food such as copepods and amphipods. On average they will eat

Originally Posted by snorvich

Since this issue comes up so frequently on Reef Central, some additional information might be useful. An aggregation of fish is the general term for any collection of fish that have gathered together in some locality. Fish aggregations can be structured or unstructured. An unstructured aggregation might be a group of mixed species and sizes that have gathered randomly near some local resource, such as food or nesting sites.

If, in addition, the aggregation comes together in an interactive,

Originally Posted by Ken Hahn

There is some accurate and some pretty iffy LED info in this thread. Since I sometimes work with high powered LED technology in my industry (displays, not aquariums), I'd like to clarify a few points.

1. When the LED mfrs state a lifetime of 50,000 hours or so, that is a theoretical lifetime based on the known physics of LEDs. It is not a tested lifetime. Since it would take about 6 years to run that test, no one including the LED manufacturer has typically run one that long before