Larval zebrafish swim bouts in three dimensions reveal both new and redundant behaviours.

Among aculeate hymenopterans, ants (Formicidae) are eusocial insects forming colonies whose sizes range from 5 to 10 workers in to ≈ 300 million in supercolonies (Giraud , ; D'Esquivel , ). Ubiquitous, they are present from the equator to subpolar regions, occurring in deserts, grasslands, and forests; they are involved in a number of key ecological processes and, frequently, they are ecologically dominant. Diverse, they belong to 16 subfamilies, 344 genera, and 14 456 species representing ≈ 12 million tons of dry biomass on Earth, so more than both wild birds and mammals combined (Borowiec , ; Camacho , ; Schultheiss , ; Antwiki, ). Ants appeared during the beginning of the Cretaceous (145 to 66 million years ago [Mya]) and were initially predators before diversifying alongside the rise of the angiosperms, which generated the proliferation and diversification of herbivorous insects and decomposers so that potential ant prey became abundant and diverse (Chouvenc , ; Benton , ). Recent phylogenomic analyses show that the Leptanillinae and the Martialinae (the latter represented by 1 Neotropical species) are ancestral to other ants that are characterized by 2 clades: the Poneroids with 6 subfamilies (i.e. the Ponerinae, Amblyoponinae, Apomyrminae, Paraponerinae, Proceratiinae, and Agroecomyrmecinae) and the Formicoids with 8 subfamilies (i.e. the Dorylinae, Formicinae, Myrmicinae, Ectatomminae, Dolichoderinae, Aneuretinae, Pseudomyrmecinae, and Myrmeciinae) (Romiguier , ; Borowiec , ). Angiosperms also permitted ants to evolve mutualisms with plants to feed on extrafloral nectar, food bodies, or seed elaiosomes, or to become granivorous (Moreau , ; Nelsen , ; Romiguier , ; Jouault , ). However, ant abundance in many ecosystems is only possible thanks to their relationships with sap‐sucking hemipterans that provide them with honeydew (Davidson , ). In natural conditions, these hemipterans are regulated by the ants that prey on them (Styrsky & Eubanks, ; Pringle, ; Nelson & Mooney, ). This relationship permitted canopy‐dwelling ants, particularly the territorially dominant species of the Myrmicinae, Formicinae, and Dolichoderinae, to comprise one of the largest components of the animal biomass in this habitat as these ants are omnivorous (Davidson , ; Basset , ; Leponce , ). Consequently, many ant species are used as biological control agents because of their predatory activity (Dejean , ; Diamé , ; Anjos , ; Jensen , ; Sankovitz , ), whereas certain species serve as ecological indicators (Lawes , ; Zina , ).