Tetra 3 Gallon Small Fish Tank, Aquarium Starter Kit, with Filter, Air pump, & Color Changing Light, Half Moon shape, for Gold Fish & Betta.Vimvins 3 Gallon Glass Fish Tank, Easy to Maintain Small Aquarium for Betta/Goldfish/Snails/Shrimp and Aquatic Planting.
Mikilon Small Fish Tank, 0.5 Gallon Acrylic Aquarium Starter Kits with 2 PCS Plastic Aquatic Plants, Betta Fish Tank for Shrimp Guppy Jellyfish Goldfish Beta, Room Decor Desktop.
Goldfish and Shrimp Compatibility: Goldfish, especially larger ones, will likely eat shrimp, making it challenging to keep them together. However, small, young goldfish in a well-planted tank with ample cover may coexist peacefully with shrimp.
[Versatile Usage] Suitable for goldfish, small turtles, and shrimps, this beta fish tank is a one-size-fits-all solution for your aquatic companions.

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All are small enough for goldfish to prey upon. Minimum tank size for goldfish with shrimp: 30 gallons for fancy varieties, 55+ gallons for common goldfish. Even with adequate space, the predator-prey dynamic makes this combination risky.
The 38L fish tank offers more space for larger or more fish, but the 28L fish tank is still an excellent choice for smaller pets like mini cat guppies or shrimp for goldfish tank. The 28L size is perfect for creating a peaceful aquatic environment without taking up too much space.

Is there really anything that can be kept in such small tanks? What about non-fish animals, like dwarf frogs, crabs, or shrimp? It's hard enough to convince people that goldfish and saltwater are not options for these tanks with out having some alternative to offer them.
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