how big do silver dollar fish get in a tank

[DeGianna]

Don't let their name fool you; these fish aren't going to stay the size of pocket change for long. If you're hoping for a pet that remains the size of a literal silver dollar, you might want to look into, well, an actual silver dollar. It would certainly require less tank maintenance.

When it comes to the living, swimming version, these shimmering discs have some serious growth ambitions. In a home aquarium, you can expect your Silver Dollar fish to reach a rather impressive six inches in length, or about 15 cm for those on the metric system. Some particularly enthusiastic individuals have even been known to grow a bit larger than that, just to show off.

It's their classic round, laterally compressed body that gives them their famous name and saucer-like appearance. So while they grow to be six inches long, they also have a significant height to them, making them look even bigger and more substantial in the water. Basically, they start as a coin and aim to become a full-on shiny dinner plate.