harlequin fish 
noun
A small brightly coloured freshwater fish of SE Asia, popular in aquaria.
- Rasbora heteromorpha, family Cyprinidae.
- Probably the most popular rasbora, harlequin fish are lively and peaceful, and are best when swimming in a shoal.
- One large tank contains mostly smallish goldfish, and the other a mixture of tropical fish, including angels, kribs, red-tailed sharks, Chinese algae eaters, harlequin fish, various tetras, and corys.
- praepostor
- praepostorial
- praepubis
- praeputium
- praescutum
- Praesepe
- praeses
- praesidial
- praesidium
- praestant
- praestation
- praesternal
- praesternum
- praetarsus
- praetaxation
- praeterist
- praeternatural
- praetexta
- praetor
- praetorial
- praetorian
- praetorian guard
- praetorianism
- Praetorian Prefect
- Praetorian prefecture