Foxtail (Ceratophyllum demersum)

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Foxtail

Ceratophyllum demersum foxtail.jpg
Foxtail

Ceratophyllum demersum

Easy

pH

6.0 - 8.5

293.15 K
68 °F
527.67 °R
301.15 K
82.4 °F
542.07 °R
20 -28 °C (68-82.4°F)

6-20 °d

Common

Max Height

80 cm (31.5")

Max Width

15 cm (5.9")

Medium




Note: This is an very invasive species and should not be released into wild waterways.

Alternative Names and variants

Foxtail, Coontail, Rigid Hornwort (UK)

Non-English Alternative Names

  • Tornfrøet Hornblad, Karvalehti, Cornifle Nageante, Còrn-lus, Rauhes Hornblatt, Grof Hoornblad, Hornblad, Rozkatec Ponorený, Hornsärv

Environment Specifics

This plant naturally grows in the quiet water of lakes, ponds, marshes, and streams, where it is common, often abundant. These waters are typically neutral or alkaline in their content, and mostly shaded. This makes them excellent choices for low light intensity tanks. Commonly found in plant communities that include species of the genera Elodea (Waterweeds) and Potamogeton (Pondweeds). Foxtail has no roots, instead it is typically anchored to the bottom by pale, modified leaves of root-like appearance.

Practical Use

Foxtail is a good pond oxygenator, it usually grows submerged in the water but is sometimes found floating on the surface. Its thin submerged leaves and large surface to weight ratios make it an important habitat species for many aquatic invertebrates.

Identification

This plant is typically a fully submerged aquatic plant and cannot survive extended surface times. It can be distinguished from other submerged aquatic plants by its stiff, forked leaves in whorls.

Natural Distribution

Mostly found in North America, specifically Nova Scotia to Alaska, south to Florida, Louisiana, Texas, and California into South America. Also Eurasia.

Pictures

External links