Honeycomb Filefish

Can adopt three basic color patterns: mottled grey and brown, dark brown, or grey with a network of close-set polygonal spots. All have a small white spot at the rear base of the second dorsal fin and sometimes the anal fin.Description: Characterized further by first dorsal spine nearly equal to length of snout, above front half of eye and partially fitting into groove on back; side of caudal peduncle with dense patch of setae in adult male; concave dorsal profile of snout; rounded caudal fin; depth of body at origin of anal fin 2.1-2.3 in SL (Ref. 90102).

Dorsal spines (total): 2; Dorsal soft rays (total): 32 - 36; Analspines: 0; Analsoft rays: 29 - 32

Occurs on outer reef slopes to depths of 2 to more than 20 m (Ref. 1602, 48637), often silty habitats. Young float with loose surface weeds and adults are often with large Sargassum rafts during the wet season (Ref. 48637). Solitary. Feeds on benthic organisms (Ref. 30573). Somewhat secretive (Ref. 9710).

fisheries: minor commercial; price category: high; price reliability: questionable: based on ex-vessel price for species in this genus

Cantherhines pardalis (Rüppell)

A 1α′ is poorly developed, while A 2α has expanded its origin dorsally to reach the prefrontal. A 1β′ inserts by a broad, aponeurotic sheet over the posterolateral face of the maxilla ventral to the palatine. A 1β is well developed, while A 1γ has a somewhat restricted insertion on the ethmoid and palatine. A 3 is partially fused to A 2β anteroventrally. There are no fibers of A 2β from the ventrolateral flange of the preopercle.

All six branchiostegal rays may receive a slip of the hyohyoidei adductores, but that to the dorsalmost ray may be absent. The halves of the sternobranchialis do not meet in the midline. The pharyngoclavicularis externus is bifid, rectus ventralis II is as for C. spinosissimus, and the ventral portion of rectus ventralis IV is well developed.

The abductor profundus is considerably exposed ventrally beneath the abductor superficialis. Both the adductor profundus and the protractor pectoralis are well developed. The arrector ventralis pelvicus appears to be represented by a tendon which just reaches the posteroventral surface of the pelvis from the canal in which it lies. The adductor superficialis pelvicus is present as a tiny paired muscle on the dorsal surface of the pelvis. It passes through the canal in the dorsal lobe, and both tendons insert on the posterior face of the cartilagenous plug. Some of the more ventral fibers of the infracarinalis medius attach to the thickened dermis around the anus.

The anterodorsal portion of the obliquus inferioris is made up mainly of an aponeurotic sheet, the muscle fibers being confined to a narrow band in the middle of the sheet.

Oxymonacanthus longirostris (Bloch and Schneider)

A 1α is rather small, passing from the ventral face of the maxilla to its origin at the anterior junction of the frontal and prefrontal. Above A 1α′, a third subdivision, A 1α“, is recognizable. It originates along the ventrolateral surface of the ethmoid ridge and passes into the connective tissue of the lips dorsal to A 1α′. A 1β′ has acquired some origin from the prefrontal, and partially overlies A 1γ ventrally. A 1γ itself is well developed with a broad insertion. A 2α is also well developed, its origin stretching from the prefrontal to the hyomandibular and including the infraorbital ligament. At about the middle of its origin is a gap in the fibers, through which passes a sensory branch of nerve V. There are no fibers of A 2β from the ventrolateral flange of the preopercle (and this is true for all the remaining species). A 3 is poorly developed. The ridge of bone on the posterodorsal surface of the hyomandibular is well developed, the fibers of the levator arcus palatini inserting on either side of it. The lateral wall of the fossa containing the origin of this muscle has broken down, and the muscle is visible laterally between the frontal and sphenotic. A few fibers of the levator operculi arise from the pterotic. The adductor arcus palatini is visible in lateral view, and stretches to the rear of the orbit. The retractor arcus palatini is poorly developed, with no fibers to the palatine.

There is no ventromedial section to the sternohyoideus, and the aponeuroses of the sternobranchialis are more consolidated. The retractor interoperculi is absent.

The pharyngoclavicularis externus is single, and inserts on ceratobranchial 5, while the pharyngoclavicularis internus has been reduced to a straplike, parallel fibered muscle. Obliquus ventralis I is well developed, being almost the same size as rectus ventralis I. The medial portion of rectus ventralis II is as described for C. spinosissimus, and the ventral portion of rectus ventralis IV is absent (as in P. prionurus).

The depressor dorsales of the first spine has broken through beneath the lateral strut of the pterygiophore supporting the base of the spine, and has extended its origin into the fossa originally occupied only by the erector dorsalis to the first spine. Erector dorsalis II passes posteromedially to its insertion, while depressor dorsalis II courses posterolaterally to the base of the second spine. Both penetrate the tunnel beneath the flange, but do not extend beyond its anterior margin. The hypochordal longitudinalis inserts only on rays D 2 and 3, and the transversus caudalis is poorly developed. The transversus cutaneous fans out from the posterodorsal face of the pelvis, and attaches to the coracoid anteriorly.

分布於印度-太平洋區，西起紅海、非洲東岸，東至馬貴斯及杜夕群島，北至日本南部，南至羅得豪島。台灣除西部海域外，皆有分布。

中小型魚類，且不常見，無經濟價值。

體橢圓形，側扁而高；尾柄短。吻長，頭高。口端位；吻上緣線稍凹。鰓孔長於眼徑，位於眼中央下方，大部份位體中線上方。胸鰭基全在體中線下方。恥骨末端露出體外，上覆蓋有3對特化鱗片，鱗片小而短且不可動，第一對與第三對在腹面連合。體被小鱗，上有十幾個緊密聚集成堆之極粗狀的圓錐狀小棘；尾柄鱗片小棘延長成絲狀，使尾柄佈滿細剛毛。背鰭兩個，基底分離甚遠，第一背鰭位於鰓孔上方，第I背鰭棘位眼前半部上方，強壯且長，後側緣下方具小棘，此背棘基後之背棘溝深；腹鰭膜中庸稍大；尾鰭短而圓體色多變；體灰褐色，佈滿緊密而外圍為白紋之規則斑點，似網狀紋；頭部具許多來自體側延伸之白紋，皆向吻端集中；腹鰭膜緣藍色，上有許多小黑點。背鰭棘膜暗色；尾鰭淡黃褐色而具白緣；餘鰭淡色。

主要棲息於外圍礁區的斜坡處，一般被發現於水深2-20公尺內的水域。生性害羞，不易接近。以底棲生物為食。

Cantherhines pardalis is a species of fish in the family Monacanthidae, the filefishes. Common names include honeycomb filefish, honeycomb leatherjacket, and wire-netting filefish. It is native to the Indian Ocean, the eastern Atlantic, and the western Pacific, except for the seas around Hawaii, where it is replaced by Cantherhines sandwichiensis.

Occurs on outer reef slopes to depths of 2 to more than 20 m (Ref. 1602). Solitary.