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!

Best Reef Aquarium Supplements

There are unique challenges to keeping a reef aquarium. To properly maintain this type of tank, you need the right reef aquarium supplements.�

Our Guide to the Best Aquarium Sea Salt

Are you interested in setting up a salt water tank? Then you'll need our guide to the best aquarium sea salt.�

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.

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.

Tips for Keeping Your Aquarium Water Quality High

You may not be able to see it, but the quality of the water in your aquarium makes all the difference. Here's why your water quality needs to be high.

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.

How to Properly Acclimate New Fish in the Aquarium

When it comes to aquariums, how you add new fish to your tank is important to their safety and well being. Tips for acclimatizing fish to your aquarium.

How to Safely Clean Your Tank and Aquarium Decorations

If you're sprucing up your tank with aquarium d�cor, it's going to need to be cleaned. Here's how to do it without endangering your fishes' environment.

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.

Setting a Schedule for Routine Tank Maintenance

Aquariums need to be maintained regularly - it's essential to keeping your fish healthy and your tank looking its best.

5 Plants Picks for Your Brackish Aquarium

It's not saltwater, it's not freshwater - brackish aquariums offer a bit of both! But finding the right plants for this type of tank can prove to be tricky.

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.

Best Foreground Plants to Use in a Planted Tank

Much thought and planning goes into a vibrant, practical planted tank. Learn how to properly arrange your plants and which ones are best for the foreground.

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.

Feeding Techniques for Your Coral Reef Tank

With a coral reef tank, you need to think about the eating habits of all the inhabitants. Here are some tips to ensure they all get their fair share.

Tetra 101: Introduction to Schools of Fish

It's time to go back to school - we're going to educate you on schools of fish. Before you head to the front of the class, we'll teach you about tetras.

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.

Best Sponge Filters for Aquariums

Sponge filters provide mechanical filtration and, over time, may provide biological filtration as well.

Why Is My Fish Lying at the Bottom of the Tank?

Fish can have all sorts of quirky behaviors, but spotting your fish lying motionless at the bottom of the tank can be a cause for concern. While it might look alarming, this isn’t always a sign of illness.

Aquascaping: A Tank of Beauty

A tank can be a place to flex your artistic muscle. If you'd like to set up a stunning aquascape, you'll want to follow these tips to do it right.

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!

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.

Are You Feelin’ Crabby?

Are you a tank owner who's always wanted to bring home a crab? If you're ready to jump into the world of crabs, take a pinch of our tested advice.

Unpopular Opinion: Goldfish Belong Outside

Some fish belong in tanks, others need to be outside. And even though you may not like it, the goldfish's place is in a pond.

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?

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 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.

Take a Walk On the Wild Side of Bettas

Take a walk on the wild side! You know about bettas, but do you know about wild betta fish? Let's look at wild bettas that can be kept in an aquarium.

Can Betta Fish Live with Other Fish?

Betta fish - also known as Siamese fighting fish - are some of the most striking freshwater fish you can add to an aquarium. But can they mix with other fish in the tank?

Tank Stocking: The Truth About The 1 Inch Per Gallon Rule

You've heard about the "one inch of fish per gallon" rule, but there are other factors to keep in mind when you're first stocking your aquarium.

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.

Top 5 Low Light Corals for a Beginner Reef Tank

You want to start a coral reef tank, but you're not sure where to start. Here are five types of coral that are great for beginners.

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.

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.

Stay Tuned For Aquarium’s Got Talent

What amazing talent lurks in your tank? Take a front row seat - you won't believe the specular show that's going on in your aquarium!

Best Aquarium Protein Skimmers

Keeping your aquarium water clean and clear is essential for the health and wellness of your tank inhabitants.�Here are our top picks for the best aquarium protein skimmers.

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.

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.

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.

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.

Top 5 Live Plants to Use in Brackish Aquariums

A mix of salt and freshwater, brackish aquariums present its own set of challenges. Here are a few plants that hold up in this type of tank.

Coral Reefing: Choosing Soft or Hard Coral

When it comes to making a choice between soft or hard, it's not just a question for tacos. For coal reefing, are you going to go with soft or hard coral?

What You Need to Know About C02 for Planted Tanks

Carbon Dioxide is an important element in your planted tank, and your plants need more than you think. Add extra C02 for a thriving aquarium.

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?

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.

Meet the Snail Assassin: Your Solution to Pest Snails

Got a snail problem you need taken care of? To take care of a snail problem, you need to send in an Assassin Snail, better known as Clea Helena!

Multiple Tank Syndrome: It’s Time for a Fish Addict Intervention

Speaking out on her addition to fish and aquariums, Summer Davis suffers from multiple tank syndrome (MTS), and she doesn't care who knows it.

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 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 Artificial Aquarium Plants

Keeping a tank with live plants can be quite a challenge. If you want the look of a planted tank without the hassle, think about adding artificial aquarium plants.

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.�

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.�

Best Fish Food for Algae Eaters

Finding the perfect combination of aquarium inhabitants is an art. You want to find species that are compatible with each other in terms of size and color, but you also have to think about aggression and diet as well. Once you’ve established the ideal balance, it can be challenging to add a new inhabitant to the tank. If you’re struggling to control problem algae, however, adding a new species could be your best option. Bristlenose Plecostomus, oto cats, and other algae eaters are a natural and long-term solution for problem algae, but they require care of their own.

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