Species name: Poecilia reticulata
Common names: Guppy
Family: Poecilidae
Subfamily: Poeciliinae
Order: Cyprinodontiformes (rivulines, killifishes and live bearers)
Class: Actinopterygii
Maximum length: 1.6 – 2.4 in

Species name: Hyphessobrycon pulchripinnis
Common names: Lemon tetra
Family: Characidae
Subfamily: Incertae sedis
Order:
Class:
Maximum length: 1.5 in.

Species name: Pelvicachromis pulcher
Common names: kribensis, Krib, Rainbow krib
Family: Cichlidae
Subfamily: Pseudocrenilabrinae
Order: Perciformes
Class: Actinopterygii
Maximum length: 4.9 in. (male), 3.2 in. (female)

Species name: Mikrogeophagus ramirezi
Common names: Blue ram, German blue ram, Butterfly Cichlid, Golden Ram
Family: Cichlidae
Subfamily: Geophaginae
Order: Perciformes
Class: Actinopterygii
Maximum length: 3.9 in

Species name: Xiphophorus hellerii
Common names: Swordtailfish, Green swordtail
Family: Poeciliidae
Subfamily: Poeciliinae
Order: Cyprinodontiformes (rivulines, killifishes and live bearers)
Class: Actinopterygii
Maximum length: 4.7 in