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Gelidiella acerosa Hamel Chaffweed

Gelidiella acerosais commonly referred to as Hamel Chaffweed. Difficulty in the aquarium: Average. A aquarium size of at least 100 Liter is recommended. Toxicity: Toxic hazard unknown.

Profilbild Urheber Anne Frijsinger & Mat Vestjens, Holland

© Anne Frijsinger & Mat Vestjens, Holland, Bild aus der Karibik

Courtesy of the author Anne Frijsinger & Mat Vestjens, Holland Anne Frijsinger & Mat Vestjens, Holland. Please visit for more information.

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Gelidiella acerosa 
Hamel Chaffweed 
Red algae 
Family tree:
Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gelidiales (Order) > Gelidiellaceae (Family) > Gelidiella (Genus) > acerosa (Species) 
Initial determination:
(Forsskål) Feldmann & G.Hamel, 1934 
Barbados, (the) Maldives, Australia, Azores, Bahrain, Belize, Bermuda, Brazil, Chile, China, Columbia, Cook Islands, Costa Rica, Cuba, Egypt, European Coasts, Fiji, French Polynesia, Guam, Gulf of California, Gulf of Mexico, Gulf of Oman / Oman, Haiti, Hawaii, India, Indian Ocean, Indonesia, Iran, Jamaica, Japan, Kenya, Lord Howe Island, Madagascar, Malaysia, Mauritius, Mexico (East Pacific), Micronesia, Mozambique, Norfolk Island, Panama, Papua New Guinea, Philippines, Puerto Rico, Réunion , Samoa, São Tomé e Principé, Sierra Leone, Singapore, Solomon Islands, Somalia, South-Africa, Sri Lanka, Taiwan, Tansania, Thailand, the Andaman Sea, The Bahamas, the British Isles, the Cape Verde Archipelago, the Caribbean, the Cayman Islands, The Chagos Archipelago (the Chagos Islands), the Netherlands Antilles, the Seychelles, USA, Venezuela, Vietnam, West-Atlantic Ocean, Yemen 
0.39" - 5.91" (1cm - 15cm) 
°F - 82.4 °F (°C - 28°C) 
22 gal (~ 100L) 
Possible to breed 
Toxic hazard unknown 
Not evaluated 
More related species
in this lexicon:
Last edit:
2013-10-09 19:33:14 

Captive breeding / propagation

The offspring of Gelidiella acerosa are possible. Unfortunately, the number of offspring is not large enough to cover the demand of the trade. If you are interested in Gelidiella acerosa, please ask your dealer for offspring. If you already own Gelidiella acerosa, try breeding yourself. This will help to improve the availability of offspring in the trade and to conserve natural stocks.


(Forsskål) Feldmann & G.Hamel, 1934

Thalli form wiry mats or clumps attached by rhizoids arising from creeping stolons. Colour yellow-brown to greenish brown when inhabiting tidepools or upper intertidal areas with clear and shallow water, and reddish to purple in shaded upper subtidal and lower intertidal areas. Branches erect, decumbent or prostrate, composed of a terete to compressed central axis and pinnately arranged, filiform lateral branchlets (ramuli) which are upcurved and acuminate, 1 to 6 mm long, and generally decrease in length towards the distal portion of the axes. Few lateral branchlets may develop that give rise to second degree ramuli. In fertile plants, swollen stichidia are formed at the apices of the lateral branchlets. Branches up to 9 cm in length.

Utilized for human consumption as food: prepared as salad, dessert gel, or agar jelly, an ingredient in milk products, jams, marmalades, and ice cream; one of the most important raw materials for the manufacture of agar used in pharmaceutical industries, paints, varnishes, electric bulbs, and photographic films; used as culture medium in bacteriology, agar plates in electrophoresis, and other laboratory uses. 80758). Inhabits shallow waters of the intertidal and upper subtidal zones. Grows in exposed or shaded areas, attached to calcareous substrates such as coralline rocks, rocks covered by crustose algae, and on sandstones or shells of molluscs. Also found in tidepools with relatively high changes in water temperature, pH, salinity and degree of exposure to air are influenced by tide.

Text source: Sealifebase

External links

  1. Algae Base (en). Abgerufen am 19.08.2020.
  2. Homepage Anne Frijsinger & Mat Vestjens (en). Abgerufen am 19.08.2020.
  3. SeaLifeBase (multi). Abgerufen am 19.08.2020.
  4. World Register of Marine Species (WoRMS) (en). Abgerufen am 19.08.2020.



© Anne Frijsinger & Mat Vestjens, Holland, Bild aus der Karibik

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