Pond life, composite darkfield light micrograph. At left from top to bottom are a copepod (Cyclops sp.) larva, a copepod with eggs and a Paramecium caudatum ciliate. The middle column shows a water flea (Daphnia sp.), a gastrotrich (Chaetonotus sp.), an Euplotes sp. ciliate reproducing via binary fission and a mosquito larva. At right are three rotifers, Cephalodella sp., Squatinella sp. and Lepadella patella sp. Strands of filamentous algae structure the image. The components of the composing are not shown to scale.