KEY RESOURCES TABLE

REAGENT or RESOURCE	SOURCE	IDENTIFIER
Antibodies
Rabbit anti-myosin7a	Proteus	Cat#25–6790
Mouse anti-Emx2	Trans Genic	Cat#KO609
Mouse anti-pan-MAGUK (IgG1)	Millipore	Cat#MABN7
Mouse anti-Ribeye b (IgG2a)	Ref. 43
Goat anti-Rabbit IgG Alexa Fluor™ 546	ThermoFisher Scientific	Cat#A-11010
Goat anti-Mouse IgG Alexa Fluor™ 647	ThermoFisher Scientific	Cat#A-21236
Goat anti-Rabbit IgG Alexa Fluor™ 488	ThermoFisher Scientific	Cat#A-11008
Goat anti-Mouse IgG2a Alexa Fluor™ 546	ThermoFisher Scientific	Cat#A-21133
Goat anti-Mouse IgG1 Alexa Fluor™ 647	ThermoFisher Scientific	Cat#A-21240
Chemicals, Peptides, and Recombinant Proteins
Tricaine (0.03 % ethyl 3-aminobenzoate methanesulfonate salt	SigmaAldrich	Cat#886–86-2
alpha-bungarotoxin	Tocris	Cat#11032–79-4
Alexa 488 Phalloidin	ThermoFisher	Cat#A-12379
ProLong™ Gold Antifade Mountant	ThermoFisher	Cat#P36930
Experimental Models: Organisms/Strains
Zebrafish: Tübingen Wildtype	CWRU NIH	ZFIN ID: ZDB-GENO-990623–3
Zebrafish:Tg(myo6b:GCaMP6s-CAAX)idc1Tg	NIH	ZFIN ID: ZDB-ALT-170113–3
Zebrafish: Tg(en.sill,hsp70l:GCaMP6s) idc8Tg	NIH	ZFIN ID: ZDB-ALT-171206–1
Zebrafish: Tg(myo6b:emx2-p2A-nls-mCherry) idc4Tg	NIH	ZFIN ID: ZDB-ALT-170606–4
Zebrafish: emx2idc5	NIH	ZFIN ID: ZDB-ALT-170606–5
Zebrafish: tmc2acwr3	CWRU Chen et al.23	N/A
Software and Algorithms
jClamp	SciSoft	http://www.scisoftco.com/
ImageJ	NIH	RRID:SCR_003070 https://imagej.net/ij/
Clampfit 10.7.0.3	Molecular Devices	RRID:SCR_011323 https://support.moleculardevices.com/s/article/Axon-pCLAMP-10-Electrophysiology-Data-Acquisition-Analysis-Software-Download-Page
GraphPad Prism 8	Graphpad Software	RRID:SCR_002798 https://www.graphpad.com/scientific-software/prism/
MATLAB 9.0 R2016a	MathWorks	RRID:SCR_001622 https://www.mathworks.com/products/compiler/matlab-runtime.html
Deposited Data
Electrophysiology raw data	Dryad	DOI: 10.5061/dryad.g79cnp5v2
Calcium imaging raw data	Dryad	DOI: 10.5061/dryad.jm63xsjg2