- small mayflies, small minnow mayflies
- isosilmäpäivänkorennot
- mažieji lašalai
- murzyłkowate
- ådagsländor
These are among the smallest of mayflies, adults rarely exceeding 10 mm in length excluding the two long slender tails and sometimes much smaller. Most species have long oval forewings with very few cross veins but the hindwings are usually very small or even absent. The males often have very large eyes, shaped like turrets above the head (this is known as "turbinate condition").
Baetids breed in a wide range of waters from lakes and streams to ditches and even water butts. The nymphs are strong swimmers and feed mainly on algae.
Suborder: Pisciforma