Fish Blog

If you’re looking to swim with the big fish… or the small fish… or anything in between, our in-depth Fish Blog section covers everything an avid aquarist needs to know.

Covering all types of aquarium tanks, to cool and interesting ideas for your next fishy endeavor, PetGuide.com’s Fish Blog is the perfect spot for experienced and beginner fish enthusiasts alike. We cover the various aspects of fish keeping as a hobby – from simple planted tanks to complex marine environments, as well as aquarium fish and their compatibility with other species. Dive right into the fascinating world of aquariums!

If you are in need for some tips and ideas on decorating your fish tank with beautiful plants, make sure to hop on over to our Aquatic Plants section. In case you have a saltwater tank and want to create a unique environment for its inhabitants, Coral Reefing is definitely an option worth looking into. Reef tanks are not only great for the fish but a magnificent centerpiece for your home as well! Depending on the type of water in your tank, you will also find invaluable advice and how-to guides in our Freshwater and Saltwater blog chapters, or useful reviews of aquarium equipment in our Fish Products section of the blog.

Wondering about adding a new creature into your aquarium? Read up on our aquarium fish species recommendations, or head on over to our Invertebrates blog, to find out how to chose, introduce and care for various marine critters, including species such as crabs, clams, starfish, and much more.

Create a stunning miniature ecosystem in your aquarium. Petguide.com’s Fish blog has all the resources you’ll need to create, decorate and maintain a gorgeous fish tank, as well as guides on choosing and caring for aquarium fish and other aquatic creatures that will inhabit it!

Aquarium Snails: The Good, The Bad, And The Ugly

What starts out as a small nuisance may end up becoming a "Snail Apocalypse!" Here's how these visitors get into your aquarium and what you can do about it.

Aquarium Spotlight: PPG Aquarium in Pittsburgh, PA

Education can be lots of fun - just don't tell the kids that! If you're looking for a family outing in Pittsburgh, PA, drop by the PPG Aquarium.

Aquarium Biology 101: Anatomy of a Fish

We all know that a fish has gills and fins... but there's more to them than just a few basic parts. Get ready for our crash course in "Anatomy of a Fish."

Daddy Dearest: A Look at Fish Fathers

Being a dad isn't easy - even when you're a fish! Fish fathers have an important role to fill when it comes to reproduction and caring for their offspring.

Choosing the Right Substrate for Your Aquarium

Let's get to the bottom of aquarium substrate! Depending on what kind of tank you set up, you need to choose the right substrate for it.

Above the Water’s Surface: A Guide to Emersed Plant Growth

A different take on planted tanks, emersed plant life gives your aquarium dimension. Let's talk about the ins and outs of emersed aquarium plants.

Best Aquarium Supplies for Biological Filtration

Balance is the key to a healthy aquarium and filtration plays a major role. That's why you need know about the best aquarium supplies for biological filtration.

The Bobbit Worm: Your Saltwater Tank’s Loch Ness Monster

Just when you thought it was safe to go back into your tank, your saltwater fish start disappearing! A devious worm may be at the center of this mystery.

Best Freeze-Dried Fish Foods

We're going to explore the subject of freeze-dried fish food in greater depth. You'll learn how to choose freeze-dried fish food, how best to feed it, and our top picks.

Best 10 Gallon Fish Tanks

Getting a 10 gallon fish tank is an excellent starting point as it is not overwhelmingly big or too challenging. Take a look at he best 10 gallon aquariums!

Best Natural-Looking Aquarium Decorations

When decorating your aquarium, you may want to create a look inspired by nature. We've picked out some of the best natural-looking aquarium decorations.

Why I Think Aquarium Rock Collecting Rocks!

Are you into hard rock? Not the music... the kind you put in your aquarium! Here's what you need to know before adding rocks to your tank.

Best Aquarium Stands and Cabinets

You can't just put a full aquarium on any piece of furniture - it has to be made to take the weight of your tank. Here are our picks for awesome aquarium stands and cabinets.�

Freshwater Clams: An Underutilized Invertebrate

Does your aquarium have a couple of clams? You need to add a few to your tank – these invertebrates are for more than just show. When you think about c…

What’s Wrong With My Aquarium Plants?

Your aquarium plants aren't thriving; in fact, it looks like they're going to go belly up! Here are some common problems you'll see with aquarium plants.

Confessions of a Tank Addict: YouTube Fish Fanatic Rachel O’Leary

The first step is admitting you have a problem. The second step is to set up a YouTube channel and record your tank obsession - just like Rachel O'Leary!

Tips and Tricks for Stocking a Community Tank

You've decided to stock your own community tank. But what fish will get along together in your Zen aquarium? Here's what you need to know.

How to Anchor Live Plants to Driftwood for a Natural Décor Scheme

Driftwood adds a distinct look to an aquarium. To make sure you pull off this style, follow our tips for properly using driftwood as a live plant anchor.

Best Saltwater Aquarium Kit

A saltwater aquarium kit lets you create a gorgeous tank without much hassle - they contain everything you need to get started.

6 Popular Aquarium Fish You Need To Avoid

Just because a fish is readily available, it doesn't mean you should keep it in your own aquarium. Here are six fish that shouldn't be in your tank.

Product Review: Hydor Professional External Canister Filter

Essential for a healthy aquarium, the right filter keeps water quality in your tank high. Is the Hydor Professional External Canister Filter up for the job?

How Often Should I Feed My Fish?

There are a lot of factors that will determine the feeding schedule you have for the inhabitants of your saltwater or freshwater aquarium. The frequency of feeding your fish depends on the type of fish, their age, and the specific conditions of your tank.

5 Common Mistakes Made by Reef Keepers

When you're starting out, the smartest thing to do is learn from others' mistakes. Minimize your reef keeping boo-boos and take some advice from the pros.

Go Green With the Emerald Crab

Crabs are a cool addition to an aquarium. And the Emerald Crab does more than add color - these invertebrates clean up after themselves.

Best Cannister Filters for Large Aquariums

To ensure your fish are happy and healthy, water quality needs to be optimal. The best way to do that is with a high-quality canister filter.

Best Medications for Treating Aquarium Fish Diseases

Just like any pet, fish can get sick too. But how can you fight illness in your tank? Here's our list of the best medications for treating aquarium fish diseases.

Aquarium LED Review: Finnex Planted+ 24/7

For perfect lighting, no matter what time of day, the Finnex Planted+ 24/7 LED fixture offers a hands-free simulated sunrise and sunset effect.

Top 8 Best Aquarium Plants for Beginners

Welcome to the wonderful world of planted tanks! If you're just getting started, we've made a list of eight aquarium plants that are great for beginners.

Get to Know the Bristlenose Pleco

A lesser known variety of the species, the Bristlenose Pleco has a lot going for it. Easy to care for, this fish makes a great addition to home aquariums.

Expand Your Saltwater Tank With a Refugium

Want tag on a new addition to your saltwater tank? With a refugium, you can add greater water capacity to your main tank for a host of benefits.

What Are the Most Difficult Aquatic Plants to Grow?

Some plants take a lot more work than others. If you're looking for a challenge, these are the most difficult aquatic plants to grow.

The 5 Stimulating Spawning Methods of Fish

The spawning habits of aquarium fish are fascinating. When it comes to reproducing, fish fall into one of these five spawning types.

Tips for Keeping Fiddler Crabs in Your Brackish Tank

Fiddler Crabs make a wonderful addition to a brackish tank. Easy to care for and fun to watch, here's what you need to know about the fiddler crab.

Product Review: AquaMaxx HOB Protein Skimmer

Let us clarify how important a quality protein skimmer is to your tank. We give the AquaMaxx HOB Protein Skimmer a spin in our aquarium.

Best Fish Food for Aquarium Fish

What do you plan to feed your fish? If you're just starting out with a tank, you'll want to choose the best fish food for aquarium fish.

Go Green With EcoQube Air, the World’s First Desktop Greenhouse For

Kickstarter has the coolest products - look at the EcoQube Air. Grow a garden on your desktop and use your smartphone to control the greenhouse's settings!

Fish Ponds Let You Take Your Hobby Outside

Revitalize your outdoor living space with a container pond or a small water feature. Easy and inexpensive, your pond will add new life your landscape.

Putting Your Best Fin Forward at Aquarium Fish Shows

Have you ever been to a fish show? All aquarium hobbyists will want to attend one of these events to see the brightest and best fish strut their stuff!

Best Aquarium Maintenance Supplies

Your tank is perfect - but how do you keep it that way? You need the right aquarium maintenance supplies to keep it looking its best.

Best Air Bubbler Aquarium Decorations

Turn your tank into a conversation piece with the right decorations. Here are our picks for the best air bubbler aquarium decorations.

Top 3 Most Popular Types of Aquarium Filters

You know that you need a filter to keep your aquarium clean. Did you know that certain types of tanks need a filter that'll get the job done right?

Best Accessories for a Whimsical Fish Tank

Turn your tank into a wonderful, whimsical fish fantasy land! Here are the best accessories you should use for a whimsical fish tank.

Best Products to Remove Aquarium Algae

It's completely natural, but it sure does make your tank look gross! Here are the best products to remove aquarium algae.

Best Color-Enhancing Fish Food

The most focal part of your tank is your fish, so you want them looking their best. Keep them vibrant with the best color-enhancing fish food.

Best Affordable Supplies for a 20-Gallon Tank

Thinking about getting a home aquarium? You need more than a tank! Here's our list of best affordable supplies for a 20-gallon tank.

How to Handle Stress in Aquarium Fish

It may seem like they're care-free, but aquarium fish can suffer from stress. Here's what you need to look for and what to do if it happens to your fish.

Best Aquarium Power Filters

When you're stocking your aquarium, don't forget about the right filtration for your tank. Here are our picks for the best aquarium power filters.

Best Betta Tank Decorations

Do you want to complement your beautiful Betta fish? Why not fill your aquarium with the awe-inspiring Betta tank decorations?

Ebb and Grow: Growing and Controlling Algae in Your Aquarium

It doesn't take much for algae to become a problem in your fish tank. There are many reasons why it grows and there are a few ways to keep it under control.

Best Aquarium Substrates for Planted Tanks

What's at the bottom of the best aquariums? The best substrates! Here's our list of the best aquarium substrates for planted tanks.

Best Aquarium Pumps

Pump it up! To improve the lives of your fish, you need to invest in the right equipment. Here are our top picks for the best aquarium pumps.

Readers’ Picks: Top Seachem Products for Aquariums

Seachem is the most trusted name in the aquarium hobby game, according to PetGuide readers. Here we take a look at the top Seachem products on Amazon.

10 Essentials You Always Need in Your Fish Room

Wonder what the pros keep in their fish rooms? They've shared their tips with us, and we're passing along the 10 essentials you need in your fish room.

Why You Need To Dip Your Coral in Coral RX

You've spent a lot of time and money on your aquarium. Don't let nasty parasites take over - use Coral RX to drip your coral before adding it to your reef.

Best Aquarium Kits for Beginners

You want to get an aquarium, but you don't know where to start. Not to worry - we've compiled a list of the best aquarium kits for beginners.

Tips for Converting From a Fish-Only to a Planted Tank

You've decided to make a change from a fish-only to a planted tank. When you're ready to add live plants to the mix, here are some tips you should follow.

Our Guide to the Best Nano Tanks

Short on space, but love fish? A nano tank may just fill that empty space in your home. Here are the best nano tanks we've found.

Get to Work on an Office Aquarium

Bring life into your office with a fish tank. A growing trend in the workplace, aquariums add color, energy, and stress release to a busy day.

5 Fish Questions You Always Wanted to Ask

There's no such thing as a stupid question. But if you're too hesitant to raise your hand, here are 5 fish questions you always wanted to ask.

Best Aquarium Filter Media

There are parts of your aquarium that work behind the scenes to ensure that it works properly. Here's how to choose the best aquarium filter media for your tank.�