Danio

1995, Mary Bailey, The Ultimate Aquarium, Smithmark, page 158, Danios are very similar to barbs but are much slimmer-bodied.

To me, however, they are more reminiscent of leopard danios than livebearers.

2019, Madelaine Francis Heleine, Freshwater Aquariums For Dummies, Wiley (For Dummies), page 155, For example, danios need to be fed often because they have high metabolism rates.