Learn everything you need to care for freshwater and saltwater aquarium fish and invertebrates.

Oscar Fish Pictures and Details

by Jeanne Grunert, MG

Oscar Fish Pictures and Details

by Jeanne Grunert, MG

Do Betta Fish Sleep?

By Kelly Roper

Caring for Carnivorous Pet Fish: Feeding Tips & Tank Mates

By Mychelle Blake

Do Betta Fish Need Light?

By Mychelle Blake

10 Signs Your Betta Fish Is Sick & How to Help

By Kelly Roper

13 Best Pet Fish: Fin-Tastic Friends for Your New Aquarium

By Amber L. Drake

A Beginner's Guide to the Vibrant Molly Fish

By Amber L. Drake

What You Need to Know About Your Guppy's Gestation

By Amber L. Drake

What to Expect When Your Molly Fish Is Expecting Babies

By Amber L. Drake

How Guppies Mate: Breeding Behavior & Ideal Conditions

By Kelly Roper

Pregnant Guppy With a Side of Fry: Caring for the Mom-to-Be

By Amber L. Drake

Betta Fish Recognize Their Owners & 6 Ways to Interact With Them

By Mychelle Blake

10 Perfect Tank Mates for Your Betta (& 5 Species to Avoid)

By Amber L. Drake

10 Beginner Fish You Need in Your Tank ASAP

By Saleema Lookman, RVT

12 Common Goldfish Diseases & How to Identify the Symptoms

By Dave Donovan

10 Cute Pufferfish With Big Personalities to Add to Your Aquarium

By Saleema Lookman, RVT

Guide to Keeping a Pet Octopus: Care, Legality, & Enrichment

By Mychelle Blake

7 Best Oscar Fish Foods Plus Feeding Tips

By Mychelle Blake

8 Tips to Maximize Your Betta Fish's Lifespan

By Saleema Lookman, RVT

Common Goldfish Colors: Gorgeous Varieties for Your Tank

By Mei Sawyer

What Do Goldfish Eat? Food Staples and Special Treats

By Mychelle Blake

Snowflake Eel Profile, Care and Tank Compatibility

By Mychelle Blake

Know If a Betta Fish Is Happy With These 7 Signs

By Mychelle Blake

Oscar Fish Pictures and Details

By Jeanne Grunert, MG

Oscar Fish Diseases and Treatments

By Clare Deming, DVM

20 Popular Tropical Fish to Add to Your Aquarium

By Saleema Lookman, RVT

14 Interesting Betta Fish Facts That Might Surprise You

By Saleema Lookman, RVT

Betta Fish as Pets: What to Know About This Underwater Beauty

By Amber L. Drake

6 Most Common Betta Fish Diseases and Treatments

By Amber L. Drake

10 Fun and Interesting Angelfish Facts

By Amber L. Drake

19 Koi Fish Facts That Will Make a Splash

By Gabrielle Applebury, LMFT

The Rarest Betta Fish: A Colorful & Comprehensive Guide

By Christy Caplan

Betta Fish Losing Color? Here's What You Need to Know

By Christy Caplan

Betta Bubble Nests: A Simple Guide to Ease Your Worries

By Christy Caplan

Common Types of Goldfish for Aquariums and Ponds

By Mychelle Blake

Livebearer Fish That Make Good Pets

By Mychelle Blake

Guppy Types and Species

By Kelly Roper

Rearing Guppy Fry Tips & Advice

By Mychelle Blake

Goldfish Reproduction

By Kelly Roper

Betta Fish Pictures

By Kelly Roper