Results for “caudal-fin”

This species is relatively rare in the aquarium trade. It can be differentiated from all congeners by a combination of possessing ctenoid (vs. cycloid) scales on the sides of the head plus lacking a dark spot at the caudal-fin base.

This is one of the most frequently-traded members of the group and is an excellent choice for those new to keeping loaches. It's distinguishable from congeners by a combination of characters including: rounded/truncate caudal-fin; a scaleless patch on top of the head; relatively large adult size; flanks with spotted patterning in females and a solid...

According to Kottelat (2012) L. manipurensis Arunkumar, 2000, which was described from Moreh, Manipur state, northeastern India, close to the border with Myanmar, is a syonym of L. micropogon. Havird and Page (2010) differentiate the two based on caudal-fin patterning, predorsal length and ver...

This species is available sporadically and makes an excellent choice for those new to keeping loaches. It's distinguishable from congeners by a combination of characters including: truncate/rounded caudal-fin; no scales on top of head; dark, squarish spots o...

It's included in the P. kuhlii group of closely-related species and can be distinguished from other members by the following combination of characters: 8-11 very broad, quadrangular, regular dark body bars; orange base body colour; caudal-fin either entirely black or with a large black blotch at the base and a submarginal dark bar or row of spots. The latter feature can be useful in identifying young or newly-imported, undernourished specimens which can...

This species is not generally available in the aquarium hobby on a commercial basis but is occasionally collected and distributed by private aquarists. It's name is sometimes misapplied to commercial shipments of other species, and there also exist a number of other fish with rounded caudal-fins that may or may not be conspecific, including P. sp. 'blue line' and P. sp. 'Selatan' from Sumatra.

Within this assemblage P. manipurensis is most similar to 'P.' meingangbii and P. padamya by virtue of the fact that males in all three possess orange-red pigmentation on the flanks and caudal-fin. It can be told apart most easily by the fact it possesses a relatively small, spot-like humeral marking, vs. a vertically-elongated, relatively large humeral marking in both the other species.

This species is most easily told apart from its only congener P. dayi by lacking (vs. possessing) two dark, irregular lateral stripes on the head and body, and a shorter caudal-fin in males. The results of phylogenetic analyses by Rüber et al. (2006) suggest that Pseudosphromenus is most closely-related to Malpulutta in an evolutionary sense.

S. daemon is relatively common in the aquarium trade but is by no means easy to maintain, with particular attention to space, diet, water quality, and chemistry required in order for it to thrive. It can be distinguished from other members of the genus by possessing two dark blotches on the flank and a prominent ocellus at the caudal-fin base. Among the named species it is most similar to...

S. jurupari is also known as 'demon fish', 'jurupari earth eater', 'green horse face', or simply 'jurupari' in the aquarium hobby. It can be distinguished from other members of the genus by the following combination of characters: presence of a relatively small dark ocellus on the upper caudal-fin base; absence of well-defined dark blot...

Despite its extensive natural distribution S. lilith is uncommon in the ornamental trade, where it is sometimes referred to as 'one-spotted demon fish' or 'one spot eartheater'. It can be distinguished from other members of the genus by possessing a single dark blotch on the flank and a prominent ocellus at the caudal-fin base. Among the named species it is most similar to S. daemon, but that species possesses two blotches on the flank.

It can be distinguished from congeners by the following combination of characters: caudal peduncle deep, ≥ the deepest part of the remainder of the body; no dorsal or ventral skin crests along the caudal peduncle; caudal-fin deeply forked, the outermost principal rays in the upper and lower lobes more than twice the length of the innermost: suborbital flap in males present; a well-developed suborbital groove in females; 6–8 very regular bars along the flank.

Following Kottelat (1990) the genus Nemacheilus is characterised by a combination of characters as follows: elongate body; complete lateral line; presence of enlarged scales above and below the lateral line in some species; caudal-fin forked to deeply forked with enlarged upp...

Y. eos isn't as commonly-traded as it once was but is still available occasionally. It's difficult to confuse with any other member of the genus due to its colour pattern consisting of yellow to reddish brown base body colour (can appear greyish in some specimens, especially post-import or when introduced to a new aquarium) with a metallic green/blue golden sheen and large darkish marking on either side of the caudal peduncle. The fins can be yellowish to reddish, and the dorsal and c...

Vernacular names in Brazil include 'Cachorra' or 'Pirandirá', although these are also applied to congeners. It can be told apart from all congeners by the following combination of characters: head and body silvery with dark dorsal surface; an elongate dark blotch posterior to the opercle; dorsal, caudal and anal-fin rays reddish to orange proximally with some individual variation in intensity and tonality; adipose fin dark, with diffuse black pigmentation.

Can be told apart from congeners by its colour pattern which consists of 8-11 closely-set, narrow dark bars in the anterior part of the body and 5 wider bars in the posterior part. It also possesses prominent dorsal and ventral adipose crests on the caudal peduncle and 9½ branched dorsal-fin rays.

G. ornatapinnis can be distinguished from congeners by the following combination of characters: head small; snout relatively short and blunt; caudal peduncle very deep; pectoral, pelvic, and anal fins usually reddish-orange or rose-tinted; pelvic and anal fins often with white tips; barbels completely absent.

This species has been exported for the aquarium hobby and ranks among the smaller members of the family. It can be differentiated from all other Akysis species by the following combination of characters: head length 22.0-28.6% of standard length (SL); caudal peduncle depth 8.8-10.7% of SL; anal-fin base length 15.2-19.1% of SL; eye diameter 12-16% of head length (HL); nasal barbel length 57 92% of HL; posession of 3-4 serrae on the posterior edge ofspine; body patterning mottled with indistinct ...

The vernacular name 'lancer' is derived from the extended dorsal spine possessed by several members of the genus, which currently contains 7 species. Among them B. macracanthus is most similar to B. majusculus and B. vaillantii but can be told apart from the former by possession of shorter pectoral spines (13.3 - 16.2% SL vs. 15.8 - 20.7%), shorter adipose fin (46.0 - 58.0% SL vs. 38.8 - 45.8%), less deep caudal peduncle (7.1 - 7.5% SL vs. 5.6-7.0%) and larger adult size. From B. vaillantii it di...

D. assimilis has been misidentified as Puntius mahecola (Valenciennes 1844) in the past but the identity of both species was resolved by Pethioyagoda and Kottelat (2005 a, 2005b). They inspected the syntypes of P. mahecola and concluded that though valid it isn't closely related to any Dawkinsia (then the Puntius filamentosus group) but is rather a smaller, silvery fish with a single dark blotch on the caudal peduncle, located entirely posterior to the anal-fin. It's wi....