Prickly hornwort

Ceratophyllum muricatum, commonly known as prickly hornwort, is a submerged perennial aquatic plant belonging to the Ceratophyllaceae family. Unlike terrestrial crops, it lacks true roots, relying instead on specialized structures known as rhizoids to anchor itself within the substrate of ponds, lakes, or controlled aquatic systems.

Native to various temperate and tropical regions across Eurasia and Africa, this species thrives in still or slow-moving water bodies. While not grown for traditional harvest in the sense of food crops, it serves as a critical component in modern aquaculture, aquaponics, and ecological engineering, specifically for its role in nutrient recycling and ecosystem stabilization.

The botanical structure is defined by its long, branching stems and whorled leaves that feature characteristic prickly, serrated margins. This physical attribute provides a high surface area for photosynthesis and nutrient absorption directly from the water column. Its ability to proliferate rapidly through fragmentation makes it a highly efficient species for rapid colonization of new or restored water environments.

Environmental requirements for Ceratophyllum muricatum include a stable temperature range between 18°C and 28°C and water rich in nitrogenous compounds. It performs exceptionally well in moderately hard water. Agrotechnical management primarily involves maintaining appropriate light penetration and water flow, as stagnant conditions can lead to thermal stress or reduced gas exchange, negatively impacting plant vitality.

In terms of хозяйственное использование, this plant is invaluable for biological wastewater treatment and as a nursery habitat in fisheries. It helps prevent algal blooms by competing for inorganic nutrients. Common issues include infestation by aquatic fungi if water quality drops drastically. Proper management requires periodic thinning to prevent the culture from choking smaller water bodies or irrigation intake pipes.