12 Saltwater Fish Ideas For a 20-Gallon Tank


Most marine organisms require a large amount of space to thrive. Despite this, I was still able to dig up some of the best saltwater fish species that can be housed in a smaller 20-gallon tank. Some of these saltwater fish ideas can even be included in a nano reef setup and are beginner-friendly in terms of care.

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19 Captivating Blue Aquarium Fish of All Types

A Blue Tang or Palette Surgeonfish AKA Dory.


Have you ever wondered why some colors are more difficult to find in nature? If you have, then you’ve probably come to the realization that blue is one of those colors, and is also one of the rarest colors for most types of aquarium fish.

This makes these blue-colored fish a well-sought commodity in the fishkeeping world. Such coloring is due to a black pigment combined with what’s known as “iridocytes” in the skin that makes the fish appear blue as a result of the incoming light.

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14 Transparent Aquarium Pet Fish (See-Through Species)

Blushing Skirt Tetra.


We as hobbyists have a wide range of options when it comes to creating a unique-looking tank. One of the options at our disposal is to diversify our setup with a transparent aquarium fish species. Although these see-through fish aren’t the most popular, as you’ll find out for yourself, they can be quite interesting and are relatively undemanding when it comes to care.

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10 Most Expensive Betta Fish Breeds Ever Sold

Vibrantly Colored Betta.


There’s nothing more aesthetically pleasing than having an aquarium full of colorful fish. To achieve this, most pet owners opt for a beautiful, and yet sometimes expensive Betta fish. Due to their uniqueness, Bettas are also one of the preferred choices for breeders. Naturally, this leads to the creation of hybrid species which are quite rare, and in some extreme cases end up costing a fortune.

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