About NanoFishNest

Practical nano fish keeping, breeding, and aquarium experience — from Sweden.

NanoFishNest is run by Adrian, a nano aquarium hobbyist based in Sweden with more than 10 years of hands-on experience keeping and breeding small freshwater fish.

I started NanoFishNest because finding genuinely useful information about nano fish can be surprisingly difficult. Many guides repeat the same general advice, while the practical details that matter most to fishkeepers are often left out: getting newly hatched fry through their first week, choosing appropriate filtration for very small tanks, maintaining stable water conditions, and producing live food at home.

NanoFishNest focuses on those practical details.

What You’ll Find Here

The site covers nano aquarium keeping with a particular focus on breeding and raising small freshwater species.

Breeding & Fry Care

Detailed guides covering species such as:

Chili Rasbora
Celestial Pearl Danio
Pygmy Corydoras
Scarlet Badis
Ember Tetra
and other small freshwater species

Where I have first-hand experience with a species or method, I share the actual process, including setups, observations, results, and mistakes.

Live Food Culture

I also document live foods and fry-feeding methods that I maintain and use at home, including:

Microworm cultures
Daphnia
Other live foods suitable for small fish and fry

The goal is to explain not just what to feed, but how to culture, maintain, and use these foods successfully in a home aquarium.

Nano Aquarium Equipment

I test and use equipment on my own nano aquarium setups, including:

Sponge filters
Aquarium lighting
Filtration equipment
Other equipment used for small planted and breeding aquariums

When I recommend a product based on personal experience, I aim to explain why it worked, where it didn’t, and what type of aquarium it is actually suitable for.

First-Hand Experience & Research

A central principle of NanoFishNest is transparency.

When I describe something I have personally done, I identify it as first-hand experience. For example, when an article discusses raising a particular number of fry or using a specific aquarium setup, those results come from my own tanks and experiences.

Not every aquarium question has a single scientifically established answer, however. Where appropriate, I distinguish between:

My own observations and experiments
Established aquarium husbandry practices
Published research
Manufacturer specifications
Experienced breeder and hobbyist observations

If reliable scientific evidence is limited, I will say so rather than presenting an estimate as a proven fact.

Aquarium keeping involves variables such as water chemistry, temperature, genetics, diet, tank conditions, and individual fish behavior. Results can therefore vary between setups.

Why I Write These Guides

The aim of NanoFishNest isn’t simply to publish another species profile or equipment list.

I want each guide to answer the practical questions that arise when you’re actually standing in front of an aquarium:

What should I do? Why does it matter? What can go wrong? And what should I change if it doesn’t work?

That means documenting successful methods as well as mistakes and limitations.

The best aquarium advice isn’t necessarily the advice that sounds the most impressive. It’s the advice that helps you keep healthier fish and gives you a realistic understanding of what to expect.

Affiliate Disclosure

Some links on NanoFishNest are affiliate links. If you purchase something through one of these links, I may receive a small commission at no additional cost to you.

Affiliate relationships do not determine which products I recommend. When I describe equipment as something I have personally used, that statement reflects my own experience with that equipment.

Where I have a financial relationship with a product or company, I aim to disclose it clearly.

Affiliate income helps support the ongoing costs of running NanoFishNest, including hosting, research, equipment, and maintaining the site.