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The Nitrogen Cycle Explained (Beginner-Proof!) | Cycling an Aquarium

Aquarium with fish, coral, and blue background

Setting up your first aquarium? Congrats, you’re taking the first steps into an exciting hobby that gives you the unique opportunity of bringing a slice of underwater nature right into your living room. But don’t forget to cycle your tank before adding fish! If you’re not sure what “cycling” an aquarium means, it’s very important … Read more

Saltwater vs. Freshwater Aquarium | Which Should You Choose?

Temple decoration and moss ball in a freshwater aquarium

Thinking of setting up an aquarium in your home or office? Good choice! As mentioned in our post on the benefits of an aquarium, a fish tank makes for a fantastic centerpiece and learning opportunity. It even helps you feel more relaxed! But… between a saltwater vs. freshwater aquarium, which will work better for you? … Read more

Lawnmower Blenny Care & Info | The Aquatic Gardener

Lawnmower blenny care and info

The peaceful Salarias fasciatus is a favorite among marine aquarists for its appetite for algae. Also known as the lawnmower blenny, it doesn’t exclusively eat algae, but it certainly has enough of a taste for it that it can help you keep your tank looking nice. Want to learn more about this bottom-dwelling underwater gardener? … Read more

6 Reef Safe Starfish for Your Aquarium

5 EASY & reef safe starfish for the aquarium

If you’re looking for interesting invertebrates to add to your aquarium, starfish may have caught your eye. They’re such a typical underwater inhabitant, but at the same time so alien and unusual that it’s easy to understand why they fascinate aquarists around the world. But beware: the majority of starfish are either not reef-safe or … Read more

Biscuit Starfish Care & Info | A Stunning Sea Star

Anchitosia queenslandensis, a species of biscuit starfish

Starfish, also known as sea stars, come in many different colors, patterns, and sizes. There are some amazing-looking species out there, but one of our favorites is this one: the little orange-red biscuit starfish (genus Tosia). Its beautiful, scale-like pattern makes this one a real stunner. Many starfish have a reputation for being almost impossible … Read more

Porcupine Puffer | Caring for Diodon holocanthus

Porcupine puffer or porcupinefish close-up

If there ever was an aquarium fish that could be labeled as ‘endearing’, it has to be Diodon holocanthus. Also known as the porcupine puffer (or blowfish, in non-aquarist circles), this funny-looking species is appreciated for its strange appearance and big personality. Keep reading for everything you need to know about porcupine pufferfish care and … Read more

Harlequin Shrimp (Hymenocera picta) | The Starfish-Eating Shrimp

Harlequin shrimp underwater photo.

As regular readers will know, we love invertebrates over here at FantaSEA, and we’ve already discussed many on the blog. None of them are quite as spectacular-looking or wacky as the topic of this care guide, though: harlequin shrimp of the genus Hymenocera. If you’d like to add a seriously weird shrimp to your tank, … Read more

8 Easy Saltwater Aquarium Fish for Beginners

Firefish goby (a type of dartfish) in the aquarium.

Just getting started on your first marine aquarium? Finding the right fish for your tank and combining them in a way that avoids territorial quarrels can be a challenge. There are so many different species out there. Which do you choose?! Why not go for a hardy species that will forgive the occasional beginner mistake? … Read more