The present invention relates to feedstuffs for use in aquaculture, as well as methods for producing said feedstuffs. The invention also provides methods for rearing fish and/or crustaceans. In particular, the present invention provides a method of rearing a fish or crustacean, the method comprising feeding the fish or crustacean a feedstuff comprising lipid, the fatty acid of said lipid comprising at least 5.5% (w/w) stearidonic acid (SDA).

Methods and compositions using a CRISPR-Cas Type IIIA resulting in RNA gene knockdown and knockout in an animal.

An expression method of active goldfish gfTP1 transposase protein comprises: constructing an expression vector comprising a gfTP1 transposase reading frame of a goldfish Tgf2 transposon, after transferred into escherichia coli Rosetta 1 (DE3), culturing an expression strain until absorbance of a bacteria solution under OD.sub.600 reaches 0.3-0.4, adding IPTG, culturing under 21-22 C. in shaking of 150-200 rpm, inducing to express soluble recombinant protein, and purifying to obtain a functionally active transposase. Also provided are an expression plasmid and the expression strain of the goldfish gfTP1 transposase protein, and a use of the strain in transgenosis.

A display apparatus includes a transparent electronic display such as a non-backlit LCD screen, a display area disposed behind the transparent electronic display, and a light source for illuminating the display area. When the light source is activated, the pixels of the LCD screen, and objects behind the screen, become visible. Various examples of the display apparatus include additional enhancements to the visual image and/or functionality. These enhancements include additional monitors for coordinated displays, user-controlled turntables with coordinated informational displays, parallax compensation, RFID sensors for identifying objects to be displayed, and switchable liquid crystal films and/or polarized mirror coatings to further control revealing and concealing of objects behind the screen. Some examples of the display apparatus may include an animal habitat. The animal habitat may be selectively revealed or concealed. The display apparatus may incorporate screen displays with animal movements for unique visual effects.

Engineered CRISPR-Cas9 nucleases with altered and improved PAM specificities and their use in genomic engineering, epigenomic engineering, and genome targeting.

The present disclosure relates to methods of screening salmonids for increased resistance to viral infection, such as infectious pancreatic necrosis virus (IP-NV) infection. The present disclosure also relates to fish which have been genetic modified to have increased resistance to viral/IPNV infection. The present disclosure further relates to the use of these fish, which have been identified. or genetically modified to have increased genetic resistance. in aquaculture breeding programs and/or production. The present disclosure further relates to the use of small molecules which target NAE1 and their use in therapy or prevention of viral/IPNV infection.

Hybrid fish thumper-scale devices. A hybrid fish thumper-scale device includes a barrel configured to stun a fish by striking the fish with the barrel, a handle rigidly coupled to the barrel and configured to be gripped by a user, and a weighing scale configured to provide an indication of the weight of the fish. The weighing scale includes a fixed portion rigidly coupled to the handle and a mobile portion elastically coupled to the handle.

Engineered CRISPR-Cas9 nucleases with altered and improved PAM specificities and their use in genomic engineering, epigenomic engineering, and genome targeting.

The present invention relates to the method and use of reef coral fluorescent proteins in making transgenic red, green and yellow fluorescent zebrafish. Preferably, such fluorescent zebrafish are fertile and used to establish a population of transgenic zebrafish and to provide to the ornamental fish industry for the purpose of marketing. Thus, new varieties of ornamental fish of different fluorescence colors from a novel source are developed.

Four zebrafish gene promoters, which are skin specific, muscle specific, skeletal muscle specific and ubiquitously expressed respectively, were isolated and ligated to the 5 end of the EGFP gene. When the resulting chimeric gene constructs were introduced into zebrafish, the transgenic zebrafish emit green fluorescence under a blue light or ultraviolet light according to the specificity of the promoters used. Thus, new varieties of ornamental fish of different fluorescence patterns, e.g., skin fluorescence, muscle fluorescence, skeletal muscle-specific and/or ubiquitous fluorescence, are developed.