The Aquarium Adviser
Fish

Photo by Tanmayee D on Openverse (CC BY 2.0)

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Fish

Why Did My Pleco Die and How to Prevent the Fish from Dying?
Fish

Why Did My Pleco Die and How to Prevent the Fish from Dying?

Plecos die most often due to poor water quality, overfeeding, lack of oxygen, or illness-not random bad luck. Understanding the specific cause and taking preventive action can help you keep your pleco healthy for 10-20 years.

Photo by Peter O'Connor aka anemoneprojectors on Openverse (CC BY-SA 2.0)

Why Does My Pleco Always Hide and Never Come Out?
Fish

Why Does My Pleco Always Hide and Never Come Out?

Plecos are naturally shy, nocturnal fish that hide to feel safe-but excessive hiding often signals water quality issues, improper temperature, or stress from tank mates. Proper tank setup and care can bring your pleco out more often.

Photo by Peter O'Connor aka anemoneprojectors on Openverse (CC BY-SA 2.0)

Why Is My Goldfish Turning Black? Diseases and Treatment
Fish

Why Is My Goldfish Turning Black? Diseases and Treatment

A black color change in goldfish often signals water quality problems, bacterial or fungal infections, or parasites-but the good news is that many causes are preventable and treatable with better tank maintenance and early intervention.

Photo by Dr._Colleen_Morgan on Openverse (CC BY 2.0)

Learn How to Get Rid of White Fungus in Your Fish Tank?
Fish

Learn How to Get Rid of White Fungus in Your Fish Tank?

White fungal growth is one of the most common problems aquarists face, but it's straightforward to identify and eliminate with the right approach. Here's how to tackle it before it spreads.

Photo by Leino88 on Openverse (CC BY 2.0)

Do Fish Need Darkness to Sleep? Do They Need Light at Night?
Fish

Do Fish Need Darkness to Sleep? Do They Need Light at Night?

Fish do require periods of darkness to maintain healthy sleep cycles and reduce stress; most aquarium fish benefit from a consistent 12-hour light/dark cycle that mimics their natural environment. Without adequate darkness, fish may experience disrupted circadian rhythms, altered behavior, and compromised immune function.

Photo via Openverse (CC0)

Can You Have Too Much Oxygen in a Fish Tank?
Fish

Can You Have Too Much Oxygen in a Fish Tank?

Yes, excessive dissolved oxygen in a fish tank can actually harm your fish and damage your biological filter. While oxygen is essential for aquatic life, supersaturation can cause stress, disease, and even death.

Photo by MSVG on Openverse (CC BY 2.0)

Banana Worms: The Benefits Of Feeding Fish With This Food
Fish

Banana Worms: The Benefits Of Feeding Fish With This Food

Banana worms are a protein-rich, home-cultured live food that you can grow yourself from organic bananas to supplement your fish diet. Learn how to cultivate and feed them safely to tropical fish, bettas, and fry.

Photo by Tanmayee D on Openverse (CC BY 2.0)

5 Tips for Betta Fish Water Parameters
Fish

5 Tips for Betta Fish Water Parameters

To keep your betta fish healthy and thriving, you'll need to maintain specific water parameters including temperature, pH, and nitrate levels. Here's a practical guide to getting each one right.

Photo by Joel Carnat on Openverse (CC BY 2.0)

Engineer Goby and Snowflake Eel: Do They Get Along in the Same Tank?
Fish

Engineer Goby and Snowflake Eel: Do They Get Along in the Same Tank?

Engineer gobies and snowflake eels have fundamentally different temperaments and feeding habits, making them poor tank mates-we recommend housing them separately to avoid territorial conflicts and predation.

Photo by Just chaos on Openverse (CC BY 2.0)