This aquarium video is about:
Some Thai fairy shrimps hanging out with their mates including ramshorn snails, water lice, gammarus shrimp, gammarus pulex and daphnia.
Among these species: the amphipod Gammarus pulex; the snail Hydrobia jenkinsi; the bay barnacle; marine woodlice; the sponge Ephydatia fluviatilis; Harris mud crab; the mud shrimp Corophium volutator; the mussel Congeria cochleata; the zebra mussel; the opossum shrimp.
Source: Dutch daily NRC Handelsblad, 8 August 1991.
‘Killer’ shrimps threaten native wildlife: here.