Overview

Comprehensive Description

Biology

In vegetated sloughs, ponds, lakes, and sluggish streams; enters brackish water. 6.5 cm max TL (Ref. 5723). In Guinness Book of Records as the fish with the fewest eggs (20 eggs are spawned over a period of several days) (Ref. 6472). Feeds on worms, crustaceans, insects and plant matter (Ref. 7020). Not a seasonal killifish. Is easy to maintain in the aquarium (Ref. 27139).
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Distribution

endemic to a single state or province

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National Distribution

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

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Global Range: (20,000-200,000 square km (about 8000-80,000 square miles)) Range includes peninsular Florida from the southern tip of the state north to the St. Johns River drainage in Alachua County (Newnan's Lake), and west along the Gulf Coast to the extreme lower Ochlockonee River drainage in Wakulla and Franklin counties (Lee et al. 1980, Page and Burr 2011). A record from the vicinity of Tallahassee evidently is based on an introduction; unconfirmed records from Charleston County, South Carolina, if valid, also are based on introductions.

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North America: St. Johns and Ochlocknee River drainages south to peninsular Florida, USA.
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Florida, U.S.A.; introduced elsewhere.
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Physical Description

Morphology

Analsoft rays: 11 - 13
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Size

Length: 4 cm

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Maximum size: 65 mm TL
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Max. size

6.0 cm TL (male/unsexed; (Ref. 27139))
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Type Information

Type for Jordanella floridae
Catalog Number: USNM 22903
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): S. Baird
Year Collected: 1877
Locality: Florida: Lake Monroe, Florida, United States, North America
  • Type:
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Type for Jordanella floridae
Catalog Number: USNM 18062
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): S. Baird
Year Collected: 1877
Locality: Florida: Lake Monroe, Florida, United States, North America
  • Type:
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Ecology

Habitat

Habitat Type: Freshwater

Comments: Typically this fish occurs in shallow, open, heavily vegetated ditches, ponds, and lakes, often these are ephemeral (Lee et al. 1980); also sluggish streams and brackish water (Page and Burr 2011). Appearance of numerous young of uniform size in isolated, previously dry ponds suggests eggs can survive severely reduced moisture.

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Environment

benthopelagic; non-migratory; freshwater; brackish
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Migration

Non-Migrant: No. All populations of this species make significant seasonal migrations.

Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: No. No populations of this species make annual migrations of over 200 km.

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Trophic Strategy

Comments: Reportedly a bottom-feeding herbivore.

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In vegetated sloughs, ponds, lakes, and sluggish streams; enters brackish water. 6.5 cm max TL. Feeds on worms, crustaceans, insects and plant matter.
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Population Biology

Number of Occurrences

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 81 - 300

Comments: This species is represented by a large number of occurrences (subpopulations).

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Global Abundance

100,000 to >1,000,000 individuals

Comments: Total adult population size is unknown but apparently quite large (likely greater than 100,000). This species is common.

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Life History and Behavior

Life Cycle

Males care for the eggs (Ref. 57667). Lays up to 100 eggs in the aquarium (Ref. 7020). The male does a 'T-dance' with a receptive female and the female lays her eggs over algal-covered rocks where they adhere by their sticky thread. In the laboratory, this was simulated by using a green orlon wool wrapped glass plate - males will continuously guard the eggs on this, fanning with their fins to keep eggs clean and aerated (D. Holdway, pers. com 2006).
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Jordanella floridae

The following is a representative barcode sequence, the centroid of all available sequences for this species.


There are 7 barcode sequences available from BOLD and GenBank.

Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.

See the BOLD taxonomy browser for more complete information about this specimen and other sequences.

ACACGTTGATTCTTCTCAACTAATCACAAAGATATCGGCACCCTTTATTTAGTATTTGGTGCTTGAGCCGGCATAGTCGGGACAGCTTTG---AGCTTACTTATTCGTGCCGAACTTAGCCAGCCGGGCTCTCTTCTGGGTGAC---GACCAGATTTATAATGTAATCGTTACCGCTCATGCATTTGTAATAATCTTTTTTATAGTTATACCAATCATGATCGGCGGCTTCGGCAACTGACTAGTACCCCTTATG---ATCGGGGCCCCAGACATGGCCTTCCCTCGAATAAACAATATAAGCTTCTGACTCCTTCCCCCTTCCTTCCTCCTTCTCTTGGCCTCCTCAGGCGTAGAAGCGGGCGCGGGGACAGGCTGAACAGTCTACCCCCCTCTTGCAGGCAACTTAGCCCACGCAGGGGCTTCCGTTGATCTA---ACAATCTTCTCCCTTCATCTGGCCGGGGTCTCCTCAATTCTAGGTGCTATTAATTTTATCACAACAATTATTAATATAAAACCTCCCGCCATCTCACAGTACCAAACTCCGCTATTTGTGTGAGCCGTTTTAATTACTGCCGTTCTTCTACTTCTATCACTCCCTGTTCTCGCTGCT---GGTATTACAATGCTCTTAACAGATCGAAATTTAAATACTACATTTTTTGACCCTGCAGGCGGAGGTGACCCCATCCTTTACCAACACCTTTTCTGATTCTTTGGCCATCCTGAAGTATACATTCTCATTCTCCCCGGCTTTGGAATAATTTCCCACATTGTTGCATACTACTCTGGCAAAAAA---GAACCATTTGGCTATATGGGCATAGTCTGGGCTATAATGGCTATCGGCCTTCTTGGCTTTATTGTATGGGCCCATCACATGTTTACAGTTGGAATAGACGTAGATACTCGAGCCTACTTTACTTCAGCCACTATAATTATTGCCATCCCTACAGGAGTAAAAGTTTTCAGCTGACTT---GCCACACTTCATGGCGGA---GCCATCAAATGAGAAACACCCCTCCTCTGAGCTCTAGGCTTTATTTTCTTATTTACGGTGGGGGGATTAACCGGCATTGTACTTGCTAATTCTTCTCTAGATATTGTACTACACGATACATACTACGTAGTAGCCCATTTCCACTACGTC---CTCTCCATAGGTGCCGTGTTTGCAATTATTGCCGCCTTTGTTCATTGATTCCCCCTCTTCTCAGGCTATACACTTCACAGCACATGAACTAAAATCCACTTCGGAGTCATGTTTATTGGCGTCAACCTCACTTTCTTCCCACAACATTTCCTAGGATTAGCAGGGATGCCTCGC---CGATACTCAGACTACCCAGATGCCTACACC---CTTTGAAACACTGTCTCCTCAATTGGCTCTCTAATTTCCCTAGTAGCCGTAATTATGTTCCTCTTTATTATCTGAGAAGCATTTGCTGCAAAACGAGAAGTT---CTTTCAGTTGAATTAACAGCAACCAAC
-- end --

Download FASTA File

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Statistics of barcoding coverage: Jordanella floridae

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 7
Specimens with Barcodes: 7
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: N5 - Secure

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

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Global Short Term Trend: Relatively stable (=10% change)

Comments: Trend over the past 10 years or three generations is uncertain but likely relatively stable.

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Threats

Comments: No major threats are known.

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Not Evaluated
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: of no interest; aquarium: commercial
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Wikipedia

Flagfish

The flagfish or American flagfish, Jordanella floridae, is a pupfish native to Florida. It received its name because the male fish resembles the American flag, with a large black/blue dot and alternating red and black/blue stripes on its body. It is a common, native fish in Florida that is occasionally found in fish stores. They make quick work of hair algae and they may also eat plants in a planted aquarium.

4 vials of larvae of Jordanella after one month in normal water for the first batch, and in water containing traces of mercury (respectively 0.6PPB and 2.5PPB and 1.26PPB (parts per billion) of methylmercury for the 3 bottles at right.
American Photography archive (1973) "National water quality laboratory" (USA)

References[edit]

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Names and Taxonomy

Taxonomy

Comments: Placed in order Cyprinodontiformes by Parenti (1981); formerly in order Atheriniformes.

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