So in case you possess twenty Zebrafish (Danios), You will need at the least a 20 gallon tank. This rule only holds true for a few fish nevertheless. As stated higher than, some species of fish get monumental, so you'll need to debate proper tank dimensions using your pet supplier. https://trentonmwgra.theideasblog.com/36369335/pets-shop-near-me-for-dummies