What are aquatic beetles?
Aquatic beetles (order Coleoptera) are insects adapted to live partly or entirely in freshwater habitats, playing important roles in maintaining ecosystem balance.
How many aquatic beetle species are there?
There are around 13,000 known species worldwide, with about 776 recorded in India.
Which are the most common aquatic beetle families?
Two major groups are Dytiscidae, which are active predators, and Hydrophilidae, which mostly feed on decaying matter.
How are aquatic beetles adapted to life in water?
They have smooth, oval bodies for easy swimming, hind legs shaped like oars, and carry an air bubble under their wings that acts like a portable oxygen tank.
Where are they found?
Aquatic beetles live in ponds, lakes, streams, and even rice fields across India, and are found worldwide except Antarctica.
Why are aquatic beetles important?
They help control mosquito populations, recycle nutrients, clean up organic waste, and act as indicators of water quality and ecosystem health.
About the Authors
Femi Ezhuthupallickal Benny
Femi is a PhD student at University College London (UCL), working on the ecology and behavior of Asian giant hornets. Passionate about insects, especially wasps, she loves fieldwork in underexplored places, studying how insects interact with their environment and discovering new species while at it!
