Difference between Water Flea and Backswimmer

WATER FLEA vs BACKSWIMMER: NOUN

Any of various aquatic crustacea of the order Cladocera, characterised by their jumping or jerky mode of swimming.
One of numerous small or minute crustaceans which skip about in the water like fleas, as Daphnia pulex; any branchiopod. See Daphniidæ, Cladocera, Cyclops.
Any of various other small aquatic crustaceans, such as some copepods, that swim with a similar motion.
Any of various small chiefly freshwater branchiopod crustaceans of the order Cladocera, having a bivalve carapace and typically swimming with jerking flealike motions, and including the daphnias.
Minute free-swimming freshwater copepod having a large median eye and pear-shaped body and long antennae used in swimming; important in some food chains and as intermediate hosts of parasitic worms that affect man e.g. Guinea worms
Minute freshwater crustacean having a round body enclosed in a transparent shell; moves about like a flea by means of hairy branched antennae

Any of various aquatic insects, of the family Notonectidae, that swim on their backs.
Any of numerous predaceous aquatic insects of the family Notonectidae (such as Notonecta undulata) that swim on their backs and may inflict painful bites; -- also called boat bug.
Same as boat-fly.
Any of various predatory hemipteran insects of the family Notonectidae that live in freshwater habitats and swim on their backs by means of oarlike hind legs.
Predaceous aquatic insect that swims on its back and may inflict painful bites

Any one of numerous species of small aquatic Entomostraca belonging to the genera Cyclops, Daphnia, etc; -- so called because they swim with sudden leaps, or starts.

Sea animal, Congo snake, Bell animalcule, Water bug, Malacostracan crustacean, Whale louse, Backswimmer, Beach flea, Water scorpion, Lernean, Phyllopod, Branchiopod crustacean, Branchiopod, Cyclops, Daphnia

Natator, Frog kick, Swim, Water spider, Water flea, Natant, Hemipteran, Hemipterous insect, Butterfly stroke, Water bug, Boat bug, Water boatman, Water scorpion, Natatorious, Notonecta undulata

Entoproct, Sea animal, Congo snake, Bell animalcule, Water bug, Malacostracan crustacean, Whale louse, Backswimmer, Beach flea, Water scorpion, Lernean, Phyllopod, Branchiopod crustacean, Branchiopod, Daphnia

True bug, Natator, Frog kick, Swim, Water spider, Water flea, Natant, Hemipteran, Hemipterous insect, Butterfly stroke, Water bug, Boat bug, Water boatman, Water scorpion, Natatorious

Try blackworms, grindal worms, vinegar eels or the fully aquatic water flea.
The water flea Daphnia pulex alternates between sexual and parthenogenetic reproduction.