1 Species of Family Cyprinodontidae with Genus Megupsilon (Pupfishes)

 1. Megupsilon aporus [Catarina pupfish].

• Scientific Name         : Megupsilon aporus.
• English Name            : Catarina pupfish.
• Distribution               : Central America.
• Max. Length (cm)     : 4 TL.
• Year                           : 1972.

1 Species of Family Cyprinodontidae with Genus Jordanella (Pupfishes)

 1. Jordanella floridae [Flagfish].

• Scientific Name         : Jordanella floridae. 
• English Name            : Flagfish.
• Distribution               : North America.
• Max. Length (cm)     : 6 TL.
• Year                           : 1879. 

1 Species of Family Cyprinodontidae with Genus Garmanella (Pupfishes)

 1. Garmanella pulchra [Yucatan flagfish].

• Scientific Name         : Garmanella pulchra. 
• English Name            : Yucatan flagfish.
• Distribution               : Central America.
• Max. Length (cm)     : 4 TL.
• Year                           : 1936.

2 Species of Family Cyprinodontidae with Genus Cubanichthys (Pupfishes)

 1. Cubanichthys cubensis [Cuban killifish].

• Scientific Name         : Cubanichthys cubensis. 
• English Name            : Cuban killifish.
• Distribution               : Central America.
• Max. Length (cm)     : 8 TL.
• Year                           : 1903. 

 2. Cubanichthys pengelleyi [Jamaican killifish].

• Scientific Name         : Cubanichthys pengelleyi. 
• English Name            : Jamaican killifish.
• Distribution               : Central America.
• Max. Length (cm)     : 6 TL.
• Year                           : 1939. 

2 Species of Family Cyprinodontidae with Genus Floridichthys (Pupfishes)

 1. Floridichthys carpio [Goldspotted killifish].

• Scientific Name         : Floridichthys carpio. 
• English Name            : Goldspotted killifish.
• Distribution               : Western Central Atlantic.
• Max. Length (cm)     : 8 TL.
• Year                           : 1866. 

 2. Floridichthys polyommus [Ocellated killifish].

• Scientific Name         : Floridichthys polyommus. 
• English Name            : Ocellated killifish.
• Distribution               : North and Central America.
• Max. Length (cm)     : 11 TL.
• Year                           : 1936.