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Contributors » Mardon » Scud

Scud discovered by Mardon (#6628)

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Sighting Info

Observed: May 14, 2015 @ 3:30 PM
Posted on: May 14, 2015 @ 7:52 PM (diff: 0 days)
Lots of these were found while using a dip net to sweep the edge of a small pond. Photos were taken while the scud was swimming in a small bubble of water.

Sighting's Identification

Help to Identify

Newfoundland Nature

Newfoundland Nature

Comments by Site Members (scroll to post comment)

By Lessa on 5/15/2015 8:54:28 AM

What is a "scud"? Never hear the term. 

By Mardon on 5/15/2015 11:18:54 AM

"Scud" is one of several common names used for a small, aquatic/marine, bottom-dwelling, shrimp-like arthropod. Scientifically speaking, they are members of the Family Gammaridae, Order Amphipoda, Class Malacostraca, Subphylum Crustacea, Phylum Arthropoda. Most Amphipods are found in saltwater. This one was from a freshwater pond. They also come in different sizes. This one was very tiny. If you drag a net made of extra-fine mesh (<0.2 mm) through weeds in a shallow part of almost any pond in Newfoundland you will find some. You must look closely though. They can be so tiny (like this one) that only their movement betrays their existence. Occasionally some species can be up to 2.5cm long. They scoot around very fast, often on their side. See: and BTW, If you want to go looking for tiny aquatic organisms like this, a good net to use is the 150 micron, Two-Piece-HD-Aquatic-Net Catalog #7512D from

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