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Ostorhinchus cheni is a deep-water cardinalfish of which, probably due to its depth distribution, there are very few photos of living animals.
In addition to the animal shown here, a few more photos can be found in the easily accessible work “Cardinalsfishes of the World” by Rudie H. Kuiter on page 113. Please access this link to view them:
https://www.researchgate.net/profile/Rudie-Kuiter/publication/335777894_ApogonidaeFishesLRs/links/5d7adcb3299bf1d5a970aa40/ApogonidaeFishesLRs.pdf
Based on an underwater photo taken in Bali, Indonesia:
The Cardinalfish has a silvery-orange head and body with three golden, dark stripes: the upper stripe from the center of the head.
Between the eyes and along the base of the dorsal fins, which extends at least to the end of the second dorsal fin attachment, there is a middle stripe that runs from the dorsal edge of the eye socket to the upper part of the tail stock.
In life, the perch clearly shows fluorescent blue stripes that radiate from the snout.
A large black spot can be seen at the base of the caudal fin, and a small, less pronounced black spot behind the edge of the eye socket.
The first dorsal fin is also silvery-orange, and the membrane between the third and fifth spines is black and gold.
Similar species:
Ostorhinchus doederleini (Jordan & Snyder, 1901) and Ostorhinchus fukuii ( Hayashi, 1990)
Synonym: Apogon cheni Hayashi, 1990
Literature reference:
Yoshida, T., & Motomura, H. (2017).
Fig. 3 in Distributional Range Extension and Live Coloration of the Indo-Pacific Deepwater Cardinalfish Ostorhinchus cheni (Perciformes: Apogonidae). In Species Diversity (Vol. 22, pp. 225–230). Zenodo. https://doi.org/10.5281/zenodo.5737904
Creative Commons Attribution 4.0 International
The term "reef safe" is often used in marine aquaristics, especially when buying a new species people often ask if the new animal is "reef safe".
What exactly does reef safe mean?
To answer this question, you can ask target-oriented questions and inquire in forums, clubs, dealers and with aquarist friends:
- Are there already experiences and keeping reports that assure that the new animal can live in other suitably equipped aquariums without ever having caused problems?
- Is there any experience of invertebrates (crustaceans, hermits, mussels, snails) or corals being attacked by other inhabitants such as fish of the same or a different species?
- Is any information known or expected about a possible change in dietary habits, e.g., from a plant-based diet to a meat-based diet?
- Do the desired animals leave the reef structure "alone", do they constantly change it (boring starfish, digger gobies, parrotfish, triggerfish) and thus disturb or displace other co-inhabitants?
- do new animals tend to get diseases repeatedly and very quickly and can they be treated?
- Do known peaceful animals change their character in the course of their life and become aggressive?
- Can the death of a new animal possibly even lead to the death of the rest of the stock through poisoning (possible with some species of sea cucumbers)?
- Last but not least the keeper of the animals has to be included in the "reef safety", there are actively poisonous, passively poisonous animals, animals that have dangerous biting or stinging weapons, animals with extremely strong nettle poisons, these have to be (er)known and a plan of action should have been made in advance in case of an attack on the aquarist (e.g. telephone numbers of the poison control center, the treating doctor, the tropical institute etc.).
If all questions are evaluated positively in the sense of the animal(s) and the keeper, then one can assume a "reef safety".
In addition to the animal shown here, a few more photos can be found in the easily accessible work “Cardinalsfishes of the World” by Rudie H. Kuiter on page 113. Please access this link to view them:
https://www.researchgate.net/profile/Rudie-Kuiter/publication/335777894_ApogonidaeFishesLRs/links/5d7adcb3299bf1d5a970aa40/ApogonidaeFishesLRs.pdf
Based on an underwater photo taken in Bali, Indonesia:
The Cardinalfish has a silvery-orange head and body with three golden, dark stripes: the upper stripe from the center of the head.
Between the eyes and along the base of the dorsal fins, which extends at least to the end of the second dorsal fin attachment, there is a middle stripe that runs from the dorsal edge of the eye socket to the upper part of the tail stock.
In life, the perch clearly shows fluorescent blue stripes that radiate from the snout.
A large black spot can be seen at the base of the caudal fin, and a small, less pronounced black spot behind the edge of the eye socket.
The first dorsal fin is also silvery-orange, and the membrane between the third and fifth spines is black and gold.
Similar species:
Ostorhinchus doederleini (Jordan & Snyder, 1901) and Ostorhinchus fukuii ( Hayashi, 1990)
Synonym: Apogon cheni Hayashi, 1990
Literature reference:
Yoshida, T., & Motomura, H. (2017).
Fig. 3 in Distributional Range Extension and Live Coloration of the Indo-Pacific Deepwater Cardinalfish Ostorhinchus cheni (Perciformes: Apogonidae). In Species Diversity (Vol. 22, pp. 225–230). Zenodo. https://doi.org/10.5281/zenodo.5737904
Creative Commons Attribution 4.0 International
The term "reef safe" is often used in marine aquaristics, especially when buying a new species people often ask if the new animal is "reef safe".
What exactly does reef safe mean?
To answer this question, you can ask target-oriented questions and inquire in forums, clubs, dealers and with aquarist friends:
- Are there already experiences and keeping reports that assure that the new animal can live in other suitably equipped aquariums without ever having caused problems?
- Is there any experience of invertebrates (crustaceans, hermits, mussels, snails) or corals being attacked by other inhabitants such as fish of the same or a different species?
- Is any information known or expected about a possible change in dietary habits, e.g., from a plant-based diet to a meat-based diet?
- Do the desired animals leave the reef structure "alone", do they constantly change it (boring starfish, digger gobies, parrotfish, triggerfish) and thus disturb or displace other co-inhabitants?
- do new animals tend to get diseases repeatedly and very quickly and can they be treated?
- Do known peaceful animals change their character in the course of their life and become aggressive?
- Can the death of a new animal possibly even lead to the death of the rest of the stock through poisoning (possible with some species of sea cucumbers)?
- Last but not least the keeper of the animals has to be included in the "reef safety", there are actively poisonous, passively poisonous animals, animals that have dangerous biting or stinging weapons, animals with extremely strong nettle poisons, these have to be (er)known and a plan of action should have been made in advance in case of an attack on the aquarist (e.g. telephone numbers of the poison control center, the treating doctor, the tropical institute etc.).
If all questions are evaluated positively in the sense of the animal(s) and the keeper, then one can assume a "reef safety".
