Jim Greenfield, Großbritannien
Info
Ostorhinchus hartzfeldii (Bleeker, 1852)
Cardinalfish are easily recognized by their double dorsal fin, oversized eyes, which indicate that they are crepuscular and nocturnal, and the fine longitudinal body lines.
Care should be taken with larger cardinalfish to ensure that they are appropriately stocked, as smaller fish are also on the menu. The courtship behavior of a pair is very interesting, whereby the male takes care of the fry in his mouth and usually does not eat during this time.Freshly released delicate and tender young in miniature look very similar to their parents, they are not typical planktonic fish larvae.
Synonymised names
Apogon hartzfeldi Bleeker, 1852 · unaccepted (misspelling)
Apogon hartzfeldie Bleeker, 1852 · unaccepted (misspelling)
Apogon hartzfeldii Bleeker, 1852 · unaccepted
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".
Cardinalfish are easily recognized by their double dorsal fin, oversized eyes, which indicate that they are crepuscular and nocturnal, and the fine longitudinal body lines.
Care should be taken with larger cardinalfish to ensure that they are appropriately stocked, as smaller fish are also on the menu. The courtship behavior of a pair is very interesting, whereby the male takes care of the fry in his mouth and usually does not eat during this time.Freshly released delicate and tender young in miniature look very similar to their parents, they are not typical planktonic fish larvae.
Synonymised names
Apogon hartzfeldi Bleeker, 1852 · unaccepted (misspelling)
Apogon hartzfeldie Bleeker, 1852 · unaccepted (misspelling)
Apogon hartzfeldii Bleeker, 1852 · unaccepted
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".
