Related
FAQs: Red Algae 1, Red Algae 2, Red Algae 3, Red
Algae Identification, Red Algae ID
2, Red Algae ID 3, Red Algae ID 4, Red
Algae ID5, & Red Algae
Behavior, Red Algae
Compatibility, Red Algae
Selection, Red Algae Systems,
Red Algae Nutrition, Red Algae Disease, Red Algae Reproduction/Propagation,
Coralline
Algae, Coralline Algae
2, Coralline Algae
Identification, Coralline Algae
Behavior, Coralline Algae
Compatibility/Control, Coralline
Algae Selection, Coralline Algae
Systems, Coralline Algae
Nutrition, Coralline Algae
Disease, Coralline Algae
Reproduction/Propagation, Marine
Algae ID 1, Marine Algae ID 2,
Marine Algae Control FAQs II,
Marine Algaecide Use, Nutrient Limitation, Marine Algae Eaters, Culturing Macro-Algae; Controlling: BGA/Cyano, Red/Encrusting Algae, Green Algae, Brown/Diatom
Algae,
FAQs by Genus: Gracilaria/Ogo,
Related Articles: Marine Macro-Algae, Coralline Marine Algae,
Avoiding Algae Problems
in Marine System, Algae Control, Marine Maintenance,
Marine Scavengers, Snails, Hermit
Crabs, Mithrax/Emerald
Green Crabs, Sea Urchins, Blennies, Algae
Filters, Ctenochaetus/Bristle Mouth
Tangs, Zebrasoma/Sailfin Tangs,
Skimmers, Skimmer Selection, Marine Algae, Coralline
Algae, Green Algae, Brown Algae, Blue-Green
"Algae"/(Cyanobacteria), Diatoms, Brown
Algae,
/A Diversity of Aquatic
Life
The Red Algae, Division Rhodophyta, part 2
To:
part 1, part 3,
part 4
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By Bob Fenner
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![](WWM/eBook%20Matters/Alg%20bk%20cvr%20redux.jpg) |
New Print and
eBook on Amazon
Marine Aquarium Algae Control
by Robert (Bob) Fenner
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Genus Galaxaura:
Galaxaura sp. (maybe G. marginata,
see: Galaxaura
species in Hawaii) At right in Hawai'i and below, a
bleached-out colony in the Red Sea, and a small piece off Cozumel.
Distinct dichotomously branching species of pink to red
color. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Galaxaura%20sp.%20JAM.JPG) ![](Algae%20and%20Plt%20Pix/Red%20Algae/Galaxaura_spHI2.JPG)
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Bigger PIX:
The images in this table are linked to large (desktop size) copies.
Click on "framed" images to go to the larger size. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Galaxaura/Galaxaura%20sp.%20COZ6%20MD.JPG)
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Galaxaura marginata. To 14 cm. tall, slightly
compressed blades of pinkish red with light calcification. Colonies held by
a single holdfast in shallow (to 10 m) water in reef areas. Bonaire 2016, Di
pic. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Galaxaura/Galaxaura%20marginata%20BON3%20Di%20MD.JPG)
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Galaxaura rugosa. Tubular Thick Algae. Shallow water
species; branching 1 in. segments w/ fuzzy filaments. Roatan 2016 |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Galaxaura/Galaxaura%20rugosa%20ROA%20(1)%20MD.JPG)
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Genus Gibsmithia:
Gibsmithia hawaiiensis Doty 1963. S. Leyte 2013 |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Gibsmithia%20hawaiiensis%20S.%20Leyte%20MD.JPG)
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Bigger PIX:
The images in this table are linked
to large (desktop size) copies. Click on "framed" images
to go to the larger size. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Gibsmithia%20hawaiiensis%20KONA31%20(1)%20MD.JPG)
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Genus Gracilaria:
Gracilaria/Ogo, a fabulous food genus for humans
and fishes. Cultured for both uses. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/GracilariaAQ.jpg)
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Bigger PIX:
The images in this table are linked
to large (desktop size) copies. Click on "framed" images
to go to the larger size. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Gracilaria/Gracilaria%20tikvahiae%20ROA2%20MD.JPG)
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Genus Halymenia:
Halymenia sp. Worldwide genus of macroscopic red
algae. Aquarium pic. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Halymenia%20sp.%20vert%20IA%20MD.JPG)
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Genus Hydrolithon:
Hydrolithon farinosum Lavendar Crust Algae; a thin
layer found on hard substrates and Pearl Algae. Roatan 2019 |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Hydrolithon%20farinosum%20ROA4%20(1)%20MD.JPG)
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Genus Jania:
Jania, a tropical genus of jointed
corallines; found in South Africa, South Australia and Southern
California! This one in Belize.
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![](Algae%20and%20Plt%20Pix/Red%20Algae/Jania_spBEL.jpg)
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Jania adhaerens, Pink Segmented Alga. Appear
as fine, tangled clumps. Widely separated dichotomous branching
made up of tubular segments and flexible joints. Pink to red with
white joints. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Jania_adherensCOZDiCU.jpg)
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Bigger PIX:
The images in this table are linked
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![](Algae%20and%20Plt%20Pix/Red%20Algae/Jania%20adhaerens%20ROA4%20(2)%20MD.JPG)
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Genus Kallymenia:
Kallymenia limminghii Montagne. Strap-shaped
bright red small (to 2") blades with rippled margins. In darker areas like
bases of sea fans. To 100'. Roatan 2017 |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Kallymenia/Kallymenia%20limminghii%20ROA3%20(2)%20MD.JPG)
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Genus Laurencia:
Laurencia sp. Here in S. Sulawesi. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Laurencia%20sp.%20WAK.JPG) ![](Algae%20and%20Plt%20Pix/Red%20Algae/Laurencia%20sp.%20WAK%20(2).JPG)
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Genus Lithophyllum:
Lithophyllum the most widespread genera of
marine algae are this and Lithothamnion, rock encrusting
forms; all reefs, reef-tanks, both poles and everywhere
in-between to 500 feet depths! Thin calcareous films to knobby,
stony masses.
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![](Algae%20and%20Plt%20Pix/Red%20Algae/Lithophyllum.jpg) ![](Algae%20and%20Plt%20Pix/Red%20Algae/LithophyllumHI.jpg)
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Genus Lithothamnion:
Lithothamnion (prolifera?),
encrusting Coralline Red Algae. Here off of Queensland,
Australia. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Lithothamnion%20QLD%20MD.jpg)
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Lithothamnion ruptile,
Deepwater Red Algae. Pink to red floral sheets of encrusting coralline red
algae. Found on deeper reef slopes. Cozumel pic. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Lithothamnion%20ruptile%20Crustose%20Coralline%20Algae%20COZ%202%20MD.JPG)
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Bigger PIX:
The images in this table are
linked to large (desktop size) copies. Click on "framed"
images to go to the larger size. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/red%20alg%20covering%20scler%20skel%20NSUL%20MD.JPG) |
Genus Maripelta:
Maripelta rotata (Dawson 1963); a small Red Algae
(a few inches across) here off of San Diego on the wreck Yukon in about 80
feet of water. See AlgaeBase re. 2016 |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Maripelta%20rotata%20Rhod.%20SD%20%20(1)%20MD.JPG)
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Genus Martensia:
Martensia pavonia (J. Argedh) J. Argedh. Wide,
ephemerous translucent blades. Blades 1/3 cm. net-like. Roatan 2017. Di pic. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Martensia%20pavonia%20ROA3%20Di%20(1)%20MD.JPG)
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Bigger PIX:
The images in this table are linked
to large (desktop size) copies. Click on "framed" images
to go to the larger size. |
![](Algae%20and%20Plt%20Pix/Red%20Algae/Martensia%20pavonia%20ROA4%20(4)%20MD.JPG)
|
![](WWM/eBook%20Matters/Alg%20bk%20cvr%20redux.jpg) |
New Print and
eBook on Amazon
Marine Aquarium Algae Control
by Robert (Bob) Fenner
|
To:
part 1, part 3,
part 4
|
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