About Lena Marsh
Lena Marsh covers fish for The Faunalist, on both sides of the glass. One half is aquarium and pond keeping, mostly bettas, goldfish and koi, where the recurring question is what a fish can safely be fed and what the tank actually needs to stay stable. The other half is the wild freshwater species people meet on North American lakes and rivers, from sunfish and crappie to trout, pike and catfish. Her sources are FishBase for taxonomy and biology, state fish and wildlife agencies for ranges, records and regulations, and university extension aquaculture programs for nutrition and water quality. Species identification claims are checked against at least two of those before publishing. Lena Marsh is a pen name used by a member of the Faunalist editorial team. She is not an ichthyologist or a veterinarian, and health problems in a tank point to an aquatic vet.
What Lena covers
- Aquarium fish
- Betta fish
- Goldfish
- Koi
- Freshwater fish care
- Fish nutrition
- North American freshwater fish
- Aquarium water quality
Browse every article by Lena Marsh.
How these guides are researched
Fish guides use FishBase for taxonomy and biology, state fish and wildlife agencies for ranges, records and regulations, and university extension aquaculture programs for nutrition and water quality. Aquarium advice covers tank conditions alongside the feeding question, because most feeding problems in a home tank are water quality problems wearing a different hat, and record or size claims are checked against the agency that certifies them.
Identification, range and safety claims are checked against at least two independent sources before publishing, and where the sources disagree the article says so instead of picking the tidier answer. The full process, including which institutions we treat as authoritative for each subject area, is on our editorial standards page.
A note on the byline
Lena Marsh is a pen name used by a member of The Faunalist editorial team, and the portrait above is an illustration rather than a photograph. The person behind the name writes this subject area and nothing else. We do not claim degrees, licences or field credentials that our writers do not hold, and anything that needs a professional is sent to one inside the article. Our reasoning for working this way is set out on the editorial standards page.
Corrections and contact
Found something wrong in one of these guides, or have a question about a source? Write to [email protected] with the article name and what you found. Corrections are checked against our sources and made in the article itself.