Provided herein are, in various embodiments, devices and compositions for detecting, monitoring, and/or treating environmental stress in, and/or selecting for propagation and/or protection, one or more marine invertebrates. In some embodiments of the disclosure, the devices and compositions provide for the detection, monitoring, treatment, and or selection of coral holobionts in response to thermal stress. In still further embodiments, the disclosure provides for the selection of coral holobionts for increased viability, variation, abundance, proliferation, fecundity, or a combination thereof. In some embodiments, the disclosure provides for mitigation against the loss of coral reefs due to climate change.

Method and systems for measuring growth rate in plant or aquatic animal species such as embryonic or adult fish. The methods and systems utilize the measurement of NADH.sub.2 production by detecting a colorimetric and fluorescent shift when a redox indicator such as resazurin is added to a sample. The colorimetric/fluorescent shift is indicative of the reduction of the redox indicator by NADH.sub.2. The methods and systems of the present invention may be used to predict growth potential of a plant or animal, and measuring the growth rate of said plant or animal may be helpful for identifying and selecting individuals within a group that have greater growth potential. The methods and systems of the present invention may help eliminate the need for special equipment (e.g., for measuring oxygen consumption), decrease variability of measures, and minimize the effects of external factors (feeding/hormonal status).

Fluorescent proteins (Chlopsid FP I from Kaupichthys hyoproroides and Chlopsid FP II from Kaupichthys n. sp.) are used in a method for detecting bilirubin. The proteins are based on transcriptome analysis of the false moray eels, Kaupichthys hyoproroides and Kaupichthys n. sp., the later representing a heretofore undescribed species.

The invention relates generally to hybrid amebocyte lysate compositions (including both native and recombinant components) and their use in detecting and/or quantifying endotoxin in a sample.

Method and systems for measuring growth rate in plant or aquatic animal species such as embryonic or adult fish. The methods and systems utilize the measurement of NADH.sub.2 production by detecting a colorimetric and fluorescent shift when a redox indicator such as resazurin is added to a sample. The colorimetric/fluorescent shift is indicative of the reduction of the redox indicator by NADH.sub.2. The methods and systems of the present invention may be used to predict growth potential of a plant or animal, and measuring the growth rate of said plant or animal may be helpful for identifying and selecting individuals within a group that have greater growth potential. The methods and systems of the present invention may help eliminate the need for special equipment (e.g., for measuring oxygen consumption), decrease variability of measures, and minimize the effects of external factors (feeding/hormonal status).

Fluorescent proteins (Chlopsid FP I from Kaupichthys hyoproroides and Chlopsid FP II from Kaupichthys n. sp.) are used in a method for detecting bilirubin. The proteins are based on transcriptome analysis of the false moray eels, Kaupichthys hyoproroides and Kaupichthys n. sp., the later representing a heretofore undescribed species.

The present disclosure is directed, in part, to saxiphilin proteins, nucleic acids encoding the same, compositions comprising the same, kits comprising the same, and methods of detecting toxin in samples. In some embodiments, the toxin is saxitoxin or derivatives of the same.