Domestication and Length-Weight Relationship of Striped Snakehead Channa striata (Bloch)

Abstract

The striped snakehead Channa striata is a freshwater fish with potential for aquaculture for consumption and as a source of nutraceutical products. A domestication program using seed (wild fry) from Sigi District in Central Sulawesi Province was initiated in 2013 to promote snakehead culture (grow-out and full-cycle) in this province. During the first two stages (fry to fingerling, fingerling to juvenile), cannibalism was the only observed cause of mortality. The main aim of the third stage was to evaluate locally available natural feeds for juvenile snakeheads over 180 mm in total length. Juvenile snakeheads were reared for 8 weeks in individual compartments in a concrete tank with 3 natural feed treatments (A: Golden apple snail, Pomacea canaliculata; B: Blue panchax, Aplocheilus panchax; C: Earth worms, Lumbricus rubellus) and 5 replicates per treatment. Feeding (11% of body weight) was twice daily. All juveniles remained in good health, however results showed that treatment B produced the highest relative growth in wet weight (21.8%), significantly different from A (11.8%) and C (9.5%). Over the 3-stage study period the length-weight relationship W = aLb was isometric (b=3), with considerable variation in individual growth patterns.

Estimating the spawning and growth of striped snakehead Channa striata Bloch, 1793 in Lake Rawa Pening Indonesia

“…This study involved the use of bamboo blinds as an encircling gear for samples hidden under a grove of water hyacinths and other aquatic weeds 21 . In addition, the snakehead requires water hyacinth as a spawning and nursery ground, which also serves as a hiding place for hunting prey 13 .…”

“…They have been known to prey on several species' groups of fish, crustaceans, mollusks, annelids, and insects, with preference to small fish and shrimp 4 . However, some often identified prey fish include Trichogaster pectoralis, Trichogaster trichopterus, Osteochillus hasseltii, Oreochromis mossambicus, and other species with body length < 0.5 of the snakehead 13 . These varieties tend to grow abundantly, in order to meet the food or nutritional requirements, and the addition of a suitable habitat collectively triggers the high growth of snakehead 37,40 .…”

“…Several studies have previously been carried out by some researchers 11 , its feed evaluation 12 and domestication 13 has been investigated. Furthermore, report on reproductive biology in the Musi river flood area was performed 8 , 14 , while the use of a daily ring of an otolith in determining the age of the snakehead has been conducted in Thailand 15 , however it has never been done in Indonesia.…”

DNA barcoding detects resurrected taxon Giuris laglaizei (Sauvage 1880) in Sulawesi, Indonesia: Bolano Sau Lake payangka phylogeny, phenotypic characters and implications for Giuris spp. conservation

“…Two other species, the striped snakehead Channa striata and climbing perch Anabas testudineus are widely considered as native fishes by Sulawesians and figure in many traditional dishes, although they may have been introduced to Sulawesi, possibly in prehistoric times. 6,103,104 With respect to introduced species, it is interesting to note that not all species introduced to Bolano Sau Lake have become established or invasive. For example, the common carp (Cyprinus carpio) had been repeatedly introduced prior to 2016, 35 but none were seen during the surveys in 2019.…”

A preliminary study on the effect of enriching feed with fish oil on the growth and survival rate of climbing perch Anabas testudineus

“…Wild climbing perch populations are increasingly under pressure from habitat degradation as well as fishing pressure (Ndobe et al, 2014 andSlamat et al, 2012). The domestication of this species has begun in several regions of Indonesia (Ahmad and Fauzi, 2010;Bijaksana and Balantek, 2012).…”