Guardian Darter

Etheostoma oophylax

Percidae · freshwater water fish

2 minute read · Species guide

Guardian Darter field guide illustration

About Guardian Darter

The guardian darter (Etheostoma oophylax) is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is endemic to the eastern United States. This species inhabits creeks and headwaters, living in pools with gentle currents and adjacent riffles. This species can reach a length of 7.4 centimetres (2.9 in) SL.

Diet and feeding

The FishTraits compilation records these diet categories for this species: invertebrates or larval fish. These are broad categories, not a claim that every individual consumes every example in a category.

Reported feeding positions include bottom feeding. The compilation combines published observations; diets can vary with age, locality, and available food.

Habitat preferences

Reported habitat associations include creeks.

The source records associations with sand, vegetation. An association indicates reported use, rather than an exclusive requirement.

Reproduction and parental care

The compilation reports a representative maturity age of 1.5 years. Its maturity field summarizes mean, median, or modal estimates, usually for females; male estimates can be used when female data are unavailable. It is not a fixed age at which every fish first breeds.

Recorded spawning months are Apr for the source’s reporting region (Zzz). This is a regional calendar, not a range-wide schedule.

The reproductive-guild classification includes guarding eggs or young at a spawning substrate or nest.

Size and recorded longevity

FishTraits reports a maximum total length of 7.4 centimetres. Some entries use an estimated asymptotic length; this value should not be treated as a certified record catch.

Recorded longevity in the compilation is 3 years. Wild observations were preferred, but captive records were accepted where wild records were unavailable, and unspecified records were assumed wild. The value is not a guaranteed wild lifespan or an aquarium life expectancy.

Range

Where it lives

Share of 512 GBIF observation records with a state location, across 2 states. The orange dots are USGS stream-survey sites where this species was caught.
0%
59.8%
Share of 512 GBIF observation records with a state location, across 2 states. The orange dots are USGS stream-survey sites where this species was caught.

A blank area on the dot layer usually means nobody sampled there, not that the fish is absent. Turn on “every survey site” to see where the survey looked.

Share of records by state

The USGS stream survey caught it at 44 of its sites, in 2 states. That survey and the GBIF records are two different counts of two different things, so the site keeps them apart.

Habitat

Water and movement

Water
WoRMS records this species in fresh water.
Migration
Undetermined

Classification

Taxonomy

Kingdom
Animalia
Phylum
Chordata
Superclass
Actinopterygii
Class
Teleostei
Order
Perciformes
Family
Percidae
Genus
Etheostoma
Species
Etheostoma oophylax
ITIS TSN
553379
WoRMS AphiaID
1011099
GBIF key
2382381

Common questions about Guardian Darter

What is the scientific name of Guardian Darter?
The scientific name is Etheostoma oophylax, in the family Percidae. Classification follows ITIS.
Does Guardian Darter live in fresh water or salt water?
WoRMS records this species in fresh water.
Where has Guardian Darter been recorded in the United States?
GBIF has observations in 2 states, with the most records in Tennessee, Kentucky. The map shows observation records, which do not establish the complete natural range.

Closest relatives

Other Etheostoma species

Same family

More Percidae

All 229 species in Percidae