Feeder Fish

Eastern Box Turtle

Terrapene carolina

[confidence: high] [source: VCA box turtle diet guide; exotic reptile veterinarian review on thiaminase toxicity] Whole fish acceptable protein source for omnivorous box turtles; avoid goldfish and rosy reds which contain thiaminase causing B1 deficiency with regular feeding.

Leopard Tortoise

Stigmochelys pardalis

[confidence: high] [source: Reptifiles leopard tortoise care; exotic reptile vet review] Animal protein entirely inappropriate for strict herbivore grazing tortoise.

Sulcata Tortoise

Centrochelys sulcata

[confidence: high] [source: Reptifiles sulcata tortoise care; exotic reptile vet review] Animal protein entirely inappropriate for strict herbivore grazing tortoise.

Russian Tortoise

Agrionemys horsfieldii

[confidence: high] [source: Tortoise Trust Russian tortoise diet; exotic reptile vet review] Animal protein entirely inappropriate for strict herbivore Russian tortoises.

Greek Tortoise

Testudo graeca

[confidence: high] [source: Tortoise Trust Mediterranean tortoise diet; exotic reptile vet review] Animal protein entirely inappropriate for strict herbivore Greek tortoises; can cause serious renal disease.

Hermann's Tortoise

Testudo hermanni

[confidence: high] [source: Tortoise Trust Mediterranean tortoise diet; exotic reptile vet review] Animal protein entirely inappropriate for strict herbivore Mediterranean tortoises.

Yellow-bellied Slider

Trachemys scripta scripta

Natural diet item. Prefer guppies or mollies over goldfish (thiaminase).

Painted Turtle

Chrysemys picta

Natural prey. Guppies and mollies preferred over goldfish.

Red-eared Slider

Trachemys scripta elegans

Natural prey item for adults. Use guppies, mollies, or rosy reds — avoid goldfish (thiaminase risk with regular feeding).